Toro Multi Pro 1200 Service Manual
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Preface
The purpose of this publication is to provide the service
technician with information for troubleshooting, testing,
and repair of major systems and components on the
Multi Pro 1200 and Multi Pro 1250 sprayers with a serial
number above 310000000.
REFER TO THE OPERATOR'S MANUAL FOR OPER-
ATING,
MAINTENANCE,
INSTRUCTIONS. Space is provided in Chapter 2 of this
book to insert the Operator's Manual and Parts Catalog
for your machine. Additional copies of the Operator's
Manual and Parts Catalog are available on the internet
at www.Toro.com.
The Toro Company reserves the right to change product
specifications or this publication without notice.
AND
ADJUSTMENT
E The Toro Company - - 2011, 2014
Service Manual
(Serial Number Above 310000000)
Multi Pro
R
This safety symbol means DANGER, WARNING,
or CAUTION, PERSONAL SAFETY INSTRUC-
TION. When you see this symbol, carefully read
the instructions that follow. Failure to obey the
instructions may result in personal injury.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing, or re-
pair of the machine.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
PART NO. 11182SL (Rev A)
1200/1250

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Summary of Contents for Toro Multi Pro 1200

  • Page 1 The purpose of this publication is to provide the service technician with information for troubleshooting, testing, and repair of major systems and components on the Multi Pro 1200 and Multi Pro 1250 sprayers with a serial number above 310000000. This safety symbol means DANGER, WARNING, or CAUTION, PERSONAL SAFETY INSTRUC- REFER TO THE OPERATOR’S MANUAL FOR OPER-...
  • Page 2 This page is intentionally blank. Multi Pro 1200/1250...
  • Page 3: Table Of Contents

    ......5 - 8 Service and Repairs ..... . . 5 - 22 Multi Pro 1200/1250...
  • Page 4 This page is intentionally blank. Multi Pro 1200/1250...
  • Page 5 ......10 -- 6 Wire Harness Drawings ....10 -- 14 Multi Pro 1200/1250 Rev. A...
  • Page 6 This page is intentionally blank. Multi Pro 1200/1250...
  • Page 7 ..... SAFETY AND INSTRUCTION DECALS ..Multi Pro 1200/1250 Page 1 - - 1 Safety...
  • Page 8: Safety Instructions

    Safety Instructions The Multi Pro 1200 and Multi Pro 1250 Turf Sprayers are designed and tested to offer safe service when operated WARNING and maintained properly. Although hazard control and accident prevention are partially dependent upon the To reduce the potential for injury or death, design and configuration of the machine, these factors comply with the following safety instructions.
  • Page 9 5. Make sure all hydraulic line connectors are tight and 16.To assure optimum performance and continued all hydraulic hoses and lines are in good condition be- safety of the machine, use genuine Toro replacement fore applying pressure to the system. parts and accessories. Replacement parts and acces- 6.
  • Page 10: Jacking Instructions

    Safety and Instruction Decals Numerous safety and instruction decals are affixed to the Multi Pro 1200 and Multi Pro 1250. If any decal be- comes illegible or damaged, install a new decal. Decal part numbers are listed in your Parts Catalog. Order re- placement decals from your Authorized Toro Distributor.
  • Page 11: Product Records

    ......Product Records Insert Operator’s Manual and Parts Catalog for your Multi Pro 1200 and 1250 at the end of this chapter. Refer to Operator’s Manual for recommended maintenance intervals. Additionally, insert Installation Instructions, Operator’s Manuals and Parts Catalogs for any acces-...
  • Page 12: Equivalents And Conversions

    Equivalents and Conversions 0.09375 Product Records and Maintenance Page 2 - - 2 Multi Pro 1200/1250...
  • Page 13: Torque Specifications

    For critical applications, as determined reduced by 25% for lubricated fasteners to achieve by Toro, either the recommended torque or a torque that the similar stress as a dry fastener. Torque values may is unique to the application is clearly identified and spe- also have to be reduced when the fastener is threaded cified in this Service Manual.
  • Page 14 + 10% of the nominal torque value. Thin The specific torque value should be determined based height nuts include jam nuts. Product Records and Maintenance Page 2 - - 4 Multi Pro 1200/1250...
  • Page 15 SAE J1199. The tolerance is approximately + 10% of the installing fasteners into threaded aluminum or brass. nominal torque value. The specific torque value should be determined based Multi Pro 1200/1250 Page 2 - - 5 Product Records and Maintenance...
  • Page 16 -lb X 11.2985 = N- -cm N- -cm X 0.08851 = in- -lb ft- -lb X 1.3558 = N- -m N- -m X 0.7376 = ft- -lb Product Records and Maintenance Page 2 - - 6 Multi Pro 1200/1250...
  • Page 17: Introduction

    Service and repair parts for Kohler engines are supplied cluded at the end of this section. through your Toro Distributor or a local Kohler Dealer. Most repairs and adjustments require tools which are commonly available in many service shops. Special...
  • Page 18: Specifications

    Gear driven trochoid type Crankcase Oil Capacity 2 U.S. qt (1.9 liters) with filter Starter 12 VDC Alternator/Regulator 12 VDC 25 AMP Dry Weight (approximate) 90 lb (41 kg) Kohler Gasoline Engine Page 3 - - 2 Multi Pro 1200/1250...
  • Page 19 C. Tighten jam nut. Recheck low speed. NOTE: When the engine returns to idle speed, the drive clutch should fully disengage. Idle speed may have to be reduced to ensure complete clutch disen- gagement. Multi Pro 1200/1250 Page 3 - - 3 Kohler Gasoline Engine...
  • Page 20 4. If cable adjustment is needed, loosen cap screw and nut that secure choke cable clamp. Reposition cable to allow correct choke operation. Secure choke cable clamp. 5. Reassemble air cleaner. Kohler Gasoline Engine Page 3 - - 4 Multi Pro 1200/1250...
  • Page 21 IMPORTANT: Never operate engine without the blower housing installed. Overheating and engine damage will result. 4. Make sure grass screen and blower housing are re- installed to the engine if removed. Multi Pro 1200/1250 Page 3 - - 5 Kohler Gasoline Engine...
  • Page 22 16. Hose clamp (8 used) 5. Flange head screw (4 used) 11. Fuel filter 17. Cannister bracket 6. Fuel supply hose (filter to tank) 12. Fuel hose 18. Fuel hose Kohler Gasoline Engine Page 3 - - 6 Multi Pro 1200/1250...
  • Page 23 4. Remove fuel tank from machine using Figure 5 as a guide. 5. Remove components from fuel tank as needed us- ing Figure 6 as a guide. Multi Pro 1200/1250 Page 3 - - 7 Kohler Gasoline Engine...
  • Page 24 14. Muffler hanger bracket 4. Exhaust support bracket 10. Flat washer (3 used) 15. Cap screw (2 used) 5. Exhaust manifold 11. Flange nut 16. Flange nut 6. Flange nut (4 used) Kohler Gasoline Engine Page 3 - - 8 Multi Pro 1200/1250...
  • Page 25 Remove exhaust manifold from the engine. C. Two (2) nuts on muffler clamp to secure muffler inlet to exhaust support bracket and exhaust man- 4. Remove and discard exhaust gaskets from engine. ifold. Multi Pro 1200/1250 Page 3 - - 9 Kohler Gasoline Engine...
  • Page 26 Kohler Gasoline Engine Page 3 - - 10 Multi Pro 1200/1250...
  • Page 27 2. RH frame rail chine, disconnect fuel hose from fuel pump on engine. Pull fuel line from R--clamps on mount plate and position disconnected fuel line away from engine. Multi Pro 1200/1250 Page 3 - - 11 Kohler Gasoline Engine...
  • Page 28 (see Pump der starter motor that secures engine and negative Drive Gearbox in the Service and Repairs Section of (--) cable (Fig. 12). Chapter 7 -- Drive Train). Kohler Gasoline Engine Page 3 - - 12 Multi Pro 1200/1250...
  • Page 29 14.Check engine speed (see Adjust Engine Speed in clamps on mounting plate. Connect fuel line to the fuel the Adjustments Section of this chapter). pump and secure with clamp. Multi Pro 1200/1250 Page 3 - - 13 Kohler Gasoline Engine...
  • Page 30 1. Park machine on a level surface, stop engine and re- gine. move key from the ignition switch. Chock wheels to keep the machine from moving. Kohler Gasoline Engine Page 3 - - 14 Multi Pro 1200/1250...
  • Page 31 Chapter 7 -- Drive Train). Figure 17 15.If needed, loosen set screws and remove steering 1. Oil filter adapter 2. RH frame rail pump pulley from engine crankshaft. Locate and re- trieve key. Multi Pro 1200/1250 Page 3 - - 15 Kohler Gasoline Engine...
  • Page 32 Release the sleeve so it slides over the stud to secure cable. C. Tighten cable jam nuts that secure accelerator cable to control bracket. Kohler Gasoline Engine Page 3 - - 16 Multi Pro 1200/1250...
  • Page 33 This page is intentionally blank. Multi Pro 1200/1250 Page 3 - - 17 Kohler Gasoline Engine Rev. A...
  • Page 34 FILTER ENGINE Figure 19 Multi Pro 1200 and 1250 sprayers are equipped with a NOTE: If there is restriction in the fresh air filter, the car- fuel evaporative control system (EVAP) designed to col- bon canister or the fuel vent valve, the fuel tank may dis- lect and store evaporative emissions from the fuel tank.
  • Page 35 B. Make sure that evaporative system fuel hoses are not kinked after installation. Also, secure all hoses with hose clamps. Multi Pro 1200/1250 Page 3 - - 19 Rev. A Kohler Gasoline Engine...
  • Page 36 This page is intentionally blank. Kohler Gasoline Engine Page 3 - - 20 Multi Pro 1200/1250 Rev. A...
  • Page 37 ........Steering Pump Flow and Relief Pressure ..Steering Control Valve and Steering Cylinder Multi Pro 1200/1250 Page 4 - - 1 Hydraulic System...
  • Page 38 Gear Pump Positive displacement, gear type pump Displacement (per revolution) 0.194 in (3.18 cc) Steering Relief Pressure 1000 PSI (69.0 bar) Hydraulic Filter Spin--on cartridge type Hydraulic Reservoir In transaxle Hydraulic System Page 4 - - 2 Multi Pro 1200/1250...
  • Page 39 This page is intentionally blank. Multi Pro 1200/1250 Page 4 - - 3 Hydraulic System...
  • Page 40: General Information

    If the hose has an elbow at one end, tighten the swivel nut on that end before tightening the nut on the straight end of the hose. For additional hydraulic hose information, refer to Toro Service Training Book, Hydraulic Hose Servicing (Part Number 94813SL).
  • Page 41 85 to 105 ft--lb (116 to 142 N--m) 1 7/16 -- 12 110 to 136 ft--lb (150 to 184 N--m) 1 11/16 -- 12 140 to 172 ft--lb (190 to 233 N--m) Figure 3 Multi Pro 1200/1250 Page 4 - - 5 Hydraulic System...
  • Page 42 121 to 149 ft--lb (165 to 202 N--m) 1 5/8 -- 12 247 to 303 ft--lb (335 to 410 N--m) 149 to 183 ft--lb (202 to 248 N--m) Figure 5 Hydraulic System Page 4 - - 6 Multi Pro 1200/1250...
  • Page 43 6 (3/8 in.) 1.50 + 0.25 8 (1/2 in.) 1.50 + 0.25 10 (5/8 in.) 1.50 + 0.25 12 (3/4 in.) 1.50 + 0.25 16 (1 in.) 1.50 + 0.25 Multi Pro 1200/1250 Page 4 - - 7 Hydraulic System...
  • Page 44: Hydraulic Schematic

    CONTROL UNIT R: WORKING PRESSURE (RIGHT TURN) L: WORKING PRESSURE (LEFT TURN) STEERING CYLINDER GEAR RETURN PUMP RELIEF FILTER VALVE TRANSAXLE HOUSING SUCTION STRAINER IN TRANSAXLE Multi Pro 1200/1250 Hydraulic Schematic Hydraulic System Page 4 - - 8 Multi Pro 1200/1250...
  • Page 45: Hydraulic Flow Diagrams

    The rotary meter ensures that the oil flow to the cyl- STEERING CYLINDER STEERING CYLINDER STEERING CYLINDER PISTON MOVEMENT PISTON MOVEMENT NO PISTON MOVEMENT STEERING STEERING STEERING CONTROL CONTROL CONTROL RIGHT TURN NEUTRAL POSITION LEFT TURN Figure 8 Multi Pro 1200/1250 Page 4 - - 9 Hydraulic System...
  • Page 46: Special Tools

    Special Tools Order the following special tools from your Toro Distributor. Hydraulic Pressure Test Kit Use to take various pressure readings for diagnostic tests. Quick disconnect fittings provided attach directly to mating fittings on machine test ports without tools. A high pressure hose is provided for remote readings.
  • Page 47 It is rec- ommended that O--rings be replaced whenever a hy- draulic connection is loosened. Toro Part Number: 117- -2727 Figure 11 Hydraulic Test Fitting Kit This kit includes a variety of O--ring Face Seal fittings to TORO TEST FITTING KIT (TOR4079) enable the connection of test gauges into the system.
  • Page 48: Troubleshooting

    Steering relief valve is stuck open. Steering control valve is worn or damaged. Pulley key (either on engine or pump) is sheared. Steering cylinder leaks internally. Steering pump is worn or damaged. Hydraulic System Page 4 - - 12 Multi Pro 1200/1250...
  • Page 49: Testing

    Contamination will cause exces- sive wear of hydraulic components. 2. Put caps or plugs on any hydraulic lines left open or exposed during testing or removal of components. Multi Pro 1200/1250 Page 4 - - 13 Hydraulic System...
  • Page 50 L: WORKING PRESSURE (LEFT TURN) TESTER STEERING CYLINDER GEAR PUMP RETURN RELIEF FILTER VALVE TRANSAXLE HOUSING SUCTION STRAINER IN TRANSAXLE Working Pressure Low (Charge) Pressure Return or Suction Flow Figure 13 Hydraulic System Page 4 - - 14 Multi Pro 1200/1250...
  • Page 51 1. Steering pump 3. Suction hose B. Worn, stuck or out of adjustment relief valve. 2. Pressure hose C. Pump suction line restriction. D. Steering pump needs to be repaired or replaced. Multi Pro 1200/1250 Page 4 - - 15 Hydraulic System...
  • Page 52 CONTROL UNIT R: WORKING PRESSURE (RIGHT TURN) L: WORKING PRESSURE (LEFT TURN) OPEN FITTING PLUG STEERING CYLINDER GEAR PUMP RETURN RELIEF FILTER VALVE TRANSAXLE HOUSING SUCTION STRAINER IN TRANSAXLE Figure 15 Hydraulic System Page 4 - - 16 Multi Pro 1200/1250...
  • Page 53 A. Park machine on a level surface with the spray chapter). system turned off. B. Turn the steering wheel all the way to the right (clockwise) so the steering cylinder rod is fully ex- tended. Multi Pro 1200/1250 Page 4 - - 17 Hydraulic System...
  • Page 54: Service And Repairs

    Gangrene may result from such an injury. Hydraulic System Page 4 - - 18 Multi Pro 1200/1250...
  • Page 55 15.Operate the machine for two (2) hours under normal operating conditions. 16.Check condition of hydraulic oil. If the fluid shows any signs of contamination repeat steps 1 through 15 again. 17.Resume normal operation and follow recommended maintenance intervals. Multi Pro 1200/1250 Page 4 - - 19 Hydraulic System...
  • Page 56 (2) flange head screws that secure steering pump bracket to engine mounting plate. 4. Slide pump and pump bracket toward engine crank- shaft to allow steering pump drive belt to be removed from pulleys. Hydraulic System Page 4 - - 20 Multi Pro 1200/1250...
  • Page 57 This page is intentionally blank. Multi Pro 1200/1250 Page 4 - - 21 Hydraulic System...
  • Page 58 14. Driven clutch 4. Cap screw (4 used) 10. Set screw (2 used) 15. Pump drive gearbox 5. Steering pump bracket 11. Engine mounting plate 16. Hydraulic fitting (suction) 6. Steering pump Hydraulic System Page 4 - - 22 Multi Pro 1200/1250...
  • Page 59 2. Make sure the pulley bore and pump shaft are clean. Apply antiseize lubricant to both the pump shaft and the bore of the pulley. Position key to pump shaft. Multi Pro 1200/1250 Page 4 - - 23 Hydraulic System...
  • Page 60 (item 24). In- screw to increase relief pressure or loosen adjusting spect springs for damage. Replace any worn or screw to reduce relief pressure. damaged parts. Hydraulic System Page 4 - - 24 Multi Pro 1200/1250...
  • Page 61 7. Before removing gears (items 19 and 20), apply marking dye to mating teeth to retain “timing” and loca- tion for assembly purposes. Multi Pro 1200/1250 Page 4 - - 25 Hydraulic System...
  • Page 62 Dexron III ATF to gear and idler shaft assem- and rotate pump one revolution. If binding is noted, dis- bly, then install into stator maintaining the original timing assemble pump and check for assembly problems. and locations. Hydraulic System Page 4 - - 26 Multi Pro 1200/1250...
  • Page 63 This page is intentionally blank. Multi Pro 1200/1250 Page 4 - - 27 Hydraulic System...
  • Page 64 4. Hydraulic hose 10. Steering wheel cover 16. Hose cover 5. Hydraulic hose 11. Steering pump 17. Flat washer 6. Steering seal 12. Cap screw (4 used) 18. O- -ring Hydraulic System Page 4 - - 28 Multi Pro 1200/1250...
  • Page 65 4. Position dash panel to front hood and secure with re- 3. P port (hose to steering pump) 4. R port (hose to barrel end of steering cylinder) moved fasteners (Fig. 23). Multi Pro 1200/1250 Page 4 - - 29 Hydraulic System...
  • Page 66 9. Carefully slide the spool out of the sleeve. The cen- 3. Remove the plug, O--ring and check ball from the tering springs and spring retaining ring will stay with the housing. spool as it is removed. Hydraulic System Page 4 - - 30 Multi Pro 1200/1250...
  • Page 67 6. Install the pin. Quad Seal 7. Apply a light coating of petroleum jelly to the inner Figure 26 edge of the dust and quad seals. Multi Pro 1200/1250 Page 4 - - 31 Hydraulic System...
  • Page 68 15. Jam nut (LH thread) 4. Jam nut 10. Flat washer 16. Slotted hex nut 5. Tie rod end 11. Steering cylinder 17. Tie rod end (LH thread) 6. Retaining ring 12. Grease fitting Hydraulic System Page 4 - - 32 Multi Pro 1200/1250...
  • Page 69 Secure rod end with jam nut. 2. Position shaft end of cylinder to the steering pivot. Install flat washer and slotted hex nut finger tight to rod end. Multi Pro 1200/1250 Page 4 - - 33 Hydraulic System...
  • Page 70 2. O- -ring 7. Rod seal 12. Dust seal 3. Head 8. Piston 13. Ball joint 4. Backup ring 9. Uni- -ring 14. Jam nut 5. O- -ring 10. Lock nut Hydraulic System Page 4 - - 34 Multi Pro 1200/1250...
  • Page 71 B. Insert the retaining ring hook into the hole and ro- tate head clockwise until the retaining ring is com- pletely pulled into the barrel and the ring ends are covered. C. Apply silicone sealer to barrel access slot. Multi Pro 1200/1250 Page 4 - - 35 Hydraulic System...
  • Page 72 This page is intentionally blank. Hydraulic System Page 4 - - 36 Multi Pro 1200/1250...
  • Page 73 Pump Control and Neutral Engine Speed Control Switches ......Multi Pro 1200/1250 Electrical System Page 5 - - 1...
  • Page 74: General Information

    Electrical Drawings The electrical schematics and wire harness drawings for the Multi Pro 1200 and Multi Pro 1250 are located in Chapter 10 -- Electrical Diagrams. Electrical System Multi Pro 1200/1250...
  • Page 75: Special Tools

    Multimeter The multimeter can test electrical components and cir- cuits for current, resistance or voltage. NOTE: Toro recommends the use of a DIGITAL Volt-- Ohm--Amp multimeter when testing electrical circuits. The high impedance (internal resistance) of a digital me- ter in the voltage mode will make sure that excess cur- rent is not allowed through the meter.
  • Page 76 Toro Part Number: 107- -0392 Figure 4 Spray Pro Monitor Tester Used to test the inputs and power leads to the Spray Pro Monitor on Multi Pro 1200 and 1250 sprayers. Tests monitor functions by simulating sprayer operation. Toro Part Number: TOR6001 Figure 5...
  • Page 77: Troubleshooting

    Wiring to start circuit components is loose, corroded or damaged (see Chapter 10 -- Electrical Diagrams). Neutral switch is faulty. Ignition switch is faulty. Fuse block is faulty. Starter solenoid is faulty. Multi Pro 1200/1250 Electrical System Page 5 - - 5...
  • Page 78: General Run Problems

    Chapter 10 -- Electrical Diagrams). Circuit wiring to carburetor solenoid is loose, corroded or damaged (see Chapter 10 -- Electrical Diagrams). Engine or fuel system is malfunctioning (see Chapter 3 -- Kohler Gasoline Engine). Electrical System Multi Pro 1200/1250 Page 5 - - 6...
  • Page 79: Electrical System Quick Checks

    Do not disconnect neutral switch. It is for the op- erator’s protection. Check the operation of the neutral switch daily for proper operation. Re- place a malfunctioning switch before operating the machine. Multi Pro 1200/1250 Electrical System Page 5 - - 7...
  • Page 80: Component Testing

    POSITION CIRCUIT G + M + A B + L + A START B + L + S Figure 7 HEX NUT SWITCH LOCK WASHER Figure 8 Electrical System Multi Pro 1200/1250 Page 5 - - 8...
  • Page 81 7. When testing is completed, disconnect voltage and multimeter leads from the relay terminals. Replace relay if necessary. 8. Secure relay to machine panel and connect wire har- ness to relay. Lower operator seat. Multi Pro 1200/1250 Electrical System Page 5 - - 9...
  • Page 82: Neutral Switch

    3. Shifter bracket 2. Sensing tab 4. Neutral switch 6. If necessary, replace switch. 7. Connect the wire harness connector to the switch. 8. If removed, install air cleaner cover. Electrical System Multi Pro 1200/1250 Page 5 - - 10...
  • Page 83: Hour Meter

    4. After testing, connect the harness connector to the Figure 13 switch. Install console panel to machine. 1. Control console 2. Headlight switch BACK OF SWITCH Figure 14 Multi Pro 1200/1250 Electrical System Page 5 - - 11...
  • Page 84: Pump Control And Neutral Engine Speed Control Switches

    Pump Control and Neutral Engine Speed Control Switches The pump control and neutral engine speed control MULTI PRO 1200 MULTI PRO 1250 switches are identical switches. The pump control switch is located on the sprayer (right side) console (Fig. 15). The neutral engine speed control switch is posi- tioned on the control console (Fig.
  • Page 85: Traction Speed Sensor

    10.After testing is complete, remove jumper wires and multimeter leads from sensor connector. Install speed sensor into transaxle and secure with cap screw and lock washer. Connect speed sensor to wire harness. Multi Pro 1200/1250 Electrical System Page 5 - - 13...
  • Page 86: Pump Drive Electric Clutch

    5. See Pump Drive Electric Clutch in the Service and Repairs section of this chapter if clutch removal is nec- essary. 6. After testing, plug clutch connector into machine wire harness. Electrical System Multi Pro 1200/1250 Page 5 - - 14...
  • Page 87: Neutral Engine Speed Control Coil

    FUSIBLE LINK (16 GAUGE) harness. Use a multimeter to make sure that continuity exists between the fusible link terminals. If either fusible Figure 22 link is open, replace the fusible link harness. Multi Pro 1200/1250 Electrical System Page 5 - - 15...
  • Page 88: Accessory Solenoid

    9. Connect battery cables to battery. Make sure that positive (+) cable is secured to battery before negative (--) cable is attached to battery. 10.Lower operator seat. Electrical System Multi Pro 1200/1250 Page 5 - - 16...
  • Page 89: Spray Pro Monitor

    Spray Pro Monitor The Multi Pro 1200 and 1250 are equipped with a Spray 9. If testing results are incorrect, check for wire harness Pro Monitor (Fig. 25) to provide the machine operator problem between component (flowmeter or speed sen- with spray system information.
  • Page 90: Boom Actuator And Application Rate (Multi Pro 1250 Only) Switches

    Boom Actuator and Application Rate (Multi Pro 1250 only) Switches The right and left boom actuator switches used on both the Multi Pro 1200 and 1250 are located on the spray MULTI PRO 1200 control console (Fig. 28). Pressing the front of a switch lowers the appropriate spray boom section.
  • Page 91: Rate Lockout Key Switch (Multi Pro 1250 Only)

    NOTE: Only switch terminals A and D are used on Multi Pro 1250 machines. 4. After testing is completed, connect the harness con- FRONT OF SWITCH nector to the switch. Install console panel to machine. BACK OF SWITCH Figure 31 Multi Pro 1200/1250 Electrical System Page 5 - - 19...
  • Page 92: Master Boom (Foot) Switch (Multi Pro 1250 Only)

    1. Operator floorboard 2. Master boom switch tween the two side terminals. 4. Connect the wire harness connector to the switch af- ter testing. Figure 33 1. Common terminal 2. Side terminal Electrical System Multi Pro 1200/1250 Page 5 - - 20...
  • Page 93: Spray Valve Switch (Multi Pro 1250 Only)

    The light should be illuminated when the switch is in the ON position. 5. Connect the harness connector to the switch after testing. Install console panel to machine. BACK OF SWITCH Figure 35 Multi Pro 1200/1250 Electrical System Page 5 - - 21...
  • Page 94: Service And Repairs

    2. Remove cap screws, flat washers, lock nuts and adapter and electric clutch. spacers that secure rubber couplings to pump hub (item 22). 5. Unplug clutch wire connector from machine wire har- ness. Electrical System Multi Pro 1200/1250 Page 5 - - 22...
  • Page 95: Pump Drive Electric Clutch Service

    The pump drive electric clutch used on the Multi Pro has Pump Drive Electric Clutch in the Components section sealed, non--serviceable bearings. If clutch bearing fail- of this chapter. ure occurs, clutch replacement is necessary. Multi Pro 1200/1250 Electrical System Page 5 - - 23...
  • Page 96: Headlights

    3. Align notch on the outside of the seal with the notch in the hood. Push headlight and seal into the hood until it is firmly in place. Electrical System Multi Pro 1200/1250 Page 5 - - 24...
  • Page 97: Battery Storage

    Rinse with clear water. B. Coat battery posts and cable connectors with Battery Terminal Protector (see Special Tools in this chapter) to prevent corrosion. Multi Pro 1200/1250 Electrical System Page 5 - - 25...
  • Page 98: Battery Service

    B. Check battery terminal posts for corrosion. Use 2. Positive battery cable 6. Battery retainer wire brush to clean corrosion from posts. 3. Battery 7. Flange nut 4. Cap screw Electrical System Multi Pro 1200/1250 Page 5 - - 26...
  • Page 99 Follow the manufacturer’s instructions when us- ing a battery tester. A. Check the voltage across the battery terminals prior to testing the battery. If the voltage is less than 12.4 VDC, recharge the battery. Multi Pro 1200/1250 Electrical System Page 5 - - 27...
  • Page 100 11.5 hrs 17.3 hrs 23 hrs 6 amps 6 amps 6 amps 6 amps above 6 hrs 12 hrs 18 hrs 24 hrs 10 amps 10 amps 10 amps 10 amps Electrical System Multi Pro 1200/1250 Page 5 - - 28...
  • Page 101 ....Precautions Concerning Chemicals Used in Master Boom Valve (Multi Pro 1200) ..Spray System .
  • Page 102: Specifications

    3. Disengage all power and wait until all moving parts 5. Make sure system pressure is relieved before loos- have stopped. ening any system component (e.g. spray valves, spray system hose). Spray System Page 6 - - 2 Multi Pro 1200/1250...
  • Page 103: Spray System Operation

    Spray System Operation The Multi Pro 1200 and 1250 spray systems use a posi- Multi Pro 1200 Spray Control tive displacement diaphragm pump to move spray solu- The spray control system on the Multi Pro 1200 consists tion from the spray tank to the boom nozzles. The spray of a main on/off valve, a pressure control valve and three pump is self--priming and has a dry crankcase.
  • Page 104: Spray System Flow Diagrams

    Spray System Flow Diagrams SUCTION PRESSURE AGITATION Multi Pro 1200 BOOM SUPPLY Spray System Flow Diagram FLOW DIRECTION Spray System Page 6 - - 4 Multi Pro 1200/1250...
  • Page 105: Multi Pro 1250

    Multi Pro 1250 Spray System Flow Diagram Multi Pro 1200/1250 Page 6 - - 5 Spray System...
  • Page 106 This page is intentionally blank. Spray System Page 6 - - 6 Multi Pro 1200/1250...
  • Page 107: Special Tools

    Figure 1 O- -Ring Seal Kit The O--Ring Seal Kit includes an assortment of O--rings used for sealing Multi Pro 1200 spray control valves. It is recommended that O--rings be replaced every two (2) years or whenever a valve is loosened.
  • Page 108: Troubleshooting

    Diaphragm in turret body is leaking or damaged. when boom is switched off. Distribution valve for affected boom not seating (Multi Pro 1200). Boom valve motor for affected boom not seating (Multi Pro 1250). All spray boom nozzles leak when Master boom valve is not seating (Multi Pro 1200).
  • Page 109 No spray output from one spray Hoses on boom are pinched or kinked. boom. Distribution valve for affected boom is not open (Multi Pro 1200). Boom valve motor for affected boom is not opening (Multi Pro 1250). Console boom switch is dirty, corroded or damaged (Multi Pro 1250).
  • Page 110: Service And Repairs

    3. Suction hose 2. Suction dampener RTV Silicone Thread Sealent Sealant Thread NOTE: ARROWS SHOW FLUID Sealant FLOW DIRECTION Figure 4 1. Spray pump 3. Dampener housing 2. O- -ring 4. Diaphragm Spray System Page 6 - - 10 Multi Pro 1200/1250...
  • Page 111: Pressure Dampener

    FLOW DIRECTION Figure 6 1. Spray pump 5. Diaphragm 2. O- -ring 6. Front housing 3. Hex nut (12 used) 7. Cap screw (12 used) 4. Rear housing 8. Air valve Multi Pro 1200/1250 Page 6 - - 11 Spray System...
  • Page 112: Spray Pump

    8. Drive coupler 18. Spacer 28. Pump guard 9. Cap screw (2 used) 19. Set screw (2 used) 29. Flange nut 10. Flat washer (4 used) 20. Pump drive gearbox shaft Spray System Page 6 - - 12 Multi Pro 1200/1250...
  • Page 113 (Fig. 9). Use matchmark made during pump removal to properly orientate tee fitting. Install pressure dampener (with new O--ring) and hose- barb (with new gasket) to tee fitting. Multi Pro 1200/1250 Page 6 - - 13 Spray System...
  • Page 114 Install set screws into pump hub to se- cure hub to pump shaft. 10.Install pressure and suction hoses to correct barb fit- tings. Secure hoses with hose clamps. Spray System Page 6 - - 14 Multi Pro 1200/1250...
  • Page 115 This page is intentionally blank. Multi Pro 1200/1250 Page 6 - - 15 Spray System...
  • Page 116: Spray Pump Service

    27. Poly O- -ring 8. Diaphragm back disc 18. Felt seal 28. Lock washer 9. Nylon washer 19. Hex nut (M8) 29. Valve (outlet position) 10. Lock washer 20. Connecting rod Spray System Page 6 - - 16 Multi Pro 1200/1250...
  • Page 117 Torque hex nuts to 25 ft- -lb (34 N- -m) to secure con- necting rod to crankshaft. D. Position dust plate and felt seal on both ends of crankshaft. Multi Pro 1200/1250 Page 6 - - 17 Spray System...
  • Page 118 Secure valve chamber with two (2) hex bolts. Torque bolts 60 ft- -lb (81 N- -m). Figure 15 1. Inlet (suction) 3. Outlet valve 2. Inlet valve Spray System Page 6 - - 18 Multi Pro 1200/1250...
  • Page 119 This page is intentionally blank. Multi Pro 1200/1250 Page 6 - - 19 Spray System...
  • Page 120: Agitation Control Valve

    6. Hose: agitation supply (1”) 14. Suction hose (1 1/2”) 22. Hose clamp 7. Hosebarb 15. Tee 23. O- -ring 8. Nut 16. Flange head screw (2 used) 24. Agitation reducer Spray System Page 6 - - 20 Multi Pro 1200/1250...
  • Page 121 6. Cap screw (4 used) 14. Spindle 7. End cover 15. Valve ball 8. Screw (4 used) 16. Lock nut (4 used) Figure 19 1. Valve handle arrow 2. Valve ball large hole Multi Pro 1200/1250 Page 6 - - 21 Spray System...
  • Page 122: Agitation Components (Tank Mounted)

    8. Bulkhead gasket 14. Tee 3. O- -ring 9. Fork 15. Adapter 4. Nut 10. Bulkhead fitting 16. Nipple 5. Agitation nozzle 11. Nipple 17. O- -ring 6. Cross 12. Hosebarb Spray System Page 6 - - 22 Multi Pro 1200/1250...
  • Page 123 Loosen hose clamps and remove hoses from all hosebarbs that are to be disassembled. 4. Remove agitation components as required using Figure 20 as a guide. Discard all removed O--rings and gaskets. Multi Pro 1200/1250 Page 6 - - 23 Spray System...
  • Page 124: Pressure Relief Valve (Tank Mounted)

    13. Fork 20. Tee bracket 6. Gasket 14. Hose: control supply (1”) 21. Phillips head screw (4 used) 7. Ringnut 15. O- -ring 22. Coupler (MP 1200) 8. O- -ring Spray System Page 6 - - 24 Multi Pro 1200/1250...
  • Page 125 1. Housing 4. Relief valve seat 4. Check spray system for leaks. Repair all leaks be- 2. Relief valve cone 5. Nut fore returning the sprayer to service. 3. Spring Multi Pro 1200/1250 Page 6 - - 25 Spray System...
  • Page 126: Spray Control (Multi Pro 1200)

    Spray Control (Multi Pro 1200) FRONT RIGHT Figure 24 1. Boom distribution valves 6. Flange head screw 11. Valve mount 2. Screw 7. Flowmeter 12. Pressure control valve 3. Hex nut 8. Flange nut 13. Pressure control valve bracket 4. Washer 9.
  • Page 127 4. Install spray console, spray control panel and master boom valve handle to machine (Fig. 25). FRONT Figure 26 1. Flowmeter 3. Master boom valve 2. Pressure control valve 4. Boom distribution valves Multi Pro 1200/1250 Page 6 - - 27 Spray System...
  • Page 128: Flowmeter (Multi Pro 1200)

    Flowmeter (Multi Pro 1200) NOTE: ARROWS SHOW FLUID FLOW DIRECTION Figure 27 1. Flow sensor with nut 5. Flowmeter housing 9. Hose: from master boom valve (1”) 2. Flowmeter rotor shaft 6. O- -ring 10. O- -ring 3. Flowmeter rotor 7.
  • Page 129 1. Rotor shaft 3. Rotor magnet 2. Rotor 3. Install spray console, spray control panel and master boom valve handle to machine (Fig. 28). Multi Pro 1200/1250 Page 6 - - 29 Spray System...
  • Page 130: Master Boom Valve (Multi Pro 1200)

    Master Boom Valve (Multi Pro 1200) RIGHT FRONT NOTE: ARROWS SHOW FLUID FLOW DIRECTION Figure 31 1. Housing 12. Screw (4 used) 23. O- -ring 2. Ball 13. Hose: pressure supply (1”) 24. Seat 3. Seat 14. Nut 25. Valve assembly 4.
  • Page 131 Wear protective clothing, chemical resist- ant gloves and eye protection during repair. 1. Remove master boom valve from machine (see Spray Control (Multi Pro 1200) in this section). 2. Disassemble master boom valve using Figure 31 as a guide. Discard all removed O--rings.
  • Page 132: Pressure Control Valve (Multi Pro 1200)

    Pressure Control Valve (Multi Pro 1200) NOTE: ARROWS SHOW FLUID FLOW DIRECTION Figure 33 1. Pressure control valve 7. Washer 13. Hosebarb 2. O- -ring 8. Hex nut 14. Seal 3. O- -ring 9. Hose clamp 15. Pressure control housing 4.
  • Page 133 Wear protective clothing, chemical resist- ant gloves and eye protection during repair. 1. Remove pressure control valve from machine (see Spray Control (Multi Pro 1200) in this section). 2. Disassemble pressure control valve using Figure 33 as a guide. Discard all removed O--rings.
  • Page 134: Boom Distribution Valves (Multi Pro 1200)

    1. Remove boom distribution valve assembly (see sembly. Wear protective clothing, chemical resist- Spray Control (Multi Pro 1200) in this section). ant gloves and eye protection during repair. Spray System Page 6 - - 34...
  • Page 135 4. Install forks (item 4) to secure distribution valves to- gether. 45 in- -lb 5. Install boom distribution valve assembly to machine (5 N- -m) (see Spray Control (Multi Pro 1200) in this section). Figure 38 1. Cap screw and washer 3. Seat components 2. Seat assembly (2 used) 4.
  • Page 136: Spray Control Assembly (Multi Pro 1250)

    5 amp fuse for circuit protection. Make sure that the correct fuse is installed in the in- -line fuse holder located near the spray control motors. Spray System Page 6 - - 36 Multi Pro 1200/1250...
  • Page 137 (8) flange head screws, flat VALVE washers and flange nuts. Figure 41 3. Using labels placed during disassembly, install hoses to correct locations on spray control assembly. Secure hoses with hose clamps. Multi Pro 1200/1250 Page 6 - - 37 Spray System...
  • Page 138: Flowmeter (Multi Pro 1250)

    1. Flowmeter body 4. Downstream hub 7. Sensor assembly 2. Rotor/magnet assembly 5. Retaining ring (2 used) 8. Cable clamp 3. Upstream hub with bearing 6. Turbine stud with bearing 9. Screw Spray System Page 6 - - 38 Multi Pro 1200/1250...
  • Page 139 2. Attach flowmeter assembly to spray control and then install spray control assembly to machine (see Spray Control Assembly (Multi Pro 1250) Installation in this section). Multi Pro 1200/1250 Page 6 - - 39 Spray System...
  • Page 140: Regulating Valve Assembly (Multi Pro 1250)

    Spray System Page 6 - - 40 Multi Pro 1200/1250...
  • Page 141 45 as a guide. 2. Attach regulating valve assembly to spray control and then install spray control assembly to machine (see Spray Control Assembly (Multi Pro 1250) Installation in this section). Multi Pro 1200/1250 Page 6 - - 41 Spray System...
  • Page 142: Boom Valve Manifold Assembly (Multi Pro 1250)

    The open boom valves allow sys- ing valve assembly. tem flow to reach the appropriate boom section (right, center or left). Spray System Page 6 - - 42 Multi Pro 1200/1250...
  • Page 143 2. Attach boom valve manifold assembly to spray con- trol and then install spray control assembly to machine (see Spray Control Assembly (Multi Pro 1250) Installa- tion in this section). Multi Pro 1200/1250 Page 6 - - 43 Spray System...
  • Page 144: Regulating And Boom Valve Motor Service

    If lower two (2) seals in piston valve are worn or dam- 2. Piston valve assembly 5. Valve motor cover aged, replace piston valve assembly. The piston valve 3. Valve seal is not designed to be disassembled. Spray System Page 6 - - 44 Multi Pro 1200/1250...
  • Page 145 This page is intentionally blank. Multi Pro 1200/1250 Page 6 - - 45 Spray System...
  • Page 146: Boom Bypass

    11. Union 2. O- -ring 7. Bulkhead gasket 12. Elbow 3. Hosebarb 8. Bulkhead fitting 13. Hose clamp 4. O- -ring 9. Adapter 14. Boom bypass hose 5. Fork 10. Nipple Spray System Page 6 - - 46 Multi Pro 1200/1250...
  • Page 147 2. Drain spray tank (see Operator’s Manual). returning the sprayer to service. NOTE: The boom bypass hose on the Multi Pro 1200 is routed between the spray tank hosebarb (item 3) and the boom distribution valves. On the Multi Pro 1250, the boom bypass hose is routed between the spray tank ho- sebarb (item 3) and the spray control assembly.
  • Page 148: Tank Suction

    25. Hosebarb 7. Hosebarb 17. Tee bracket 26. Suction assembly 8. Nut 18. Screw (4 used) 27. Fork 9. Hose: control bypass (1”) 19. Connector 28. O- -ring 10. Hosebarb Spray System Page 6 - - 48 Multi Pro 1200/1250...
  • Page 149 3. Using labels placed during disassembly, install hoses to hosebarbs and secure with hose clamps. 4. Check spray tank for leaks. Repair all leaks before returning the sprayer to service. Multi Pro 1200/1250 Page 6 - - 49 Spray System...
  • Page 150: Tank Drain Assembly

    4. Flange nut (2 used) 10. Hose 16. O- -ring 5. Peg mount (2 used) 11. R- -clamp 17. Bulkhead nut 6. Rubber washer (2 used) 12. Carriage bolt 18. Elbow fitting Spray System Page 6 - - 50 Multi Pro 1200/1250...
  • Page 151 4. Check spray tank for leaks. Repair all leaks before Figure 56 returning the sprayer to service. 1. Drain valve (closed) 3. Drain valve (open) 2. Lynch pin Multi Pro 1200/1250 Page 6 - - 51 Spray System...
  • Page 152: Spray Tank

    NOTE: For easiest service access to the engine, drive clutch, driven clutch and spray pump drive gearbox, re- moval of the spray tank is recommended using the fol- lowing procedure. Spray System Page 6 - - 52 Multi Pro 1200/1250...
  • Page 153 1. Spray tank 5. Cap and flange nuts. 2. Spigot assembly 6. Rinse tank 3. Cap 7. Rubber pad 4. Fresh water tank 3. Carefully lower spray tank assembly onto machine. Multi Pro 1200/1250 Page 6 - - 53 Spray System...
  • Page 154: Turret Bodies

    2. Install supply hose(s) to turret body. Tighten hose 2. Loosen hose clamp(s) and remove supply hose(s) clamp(s). from turret body. 3. Remove flange nut that secures turret body to mount bracket. Remove turret body from machine. Spray System Page 6 - - 54 Multi Pro 1200/1250...
  • Page 155: Turret Body Service

    C. Install e--clip (item 5) into body to secure assem- 9. O- -ring 19. Cap screw 10. Plug 20. O- -ring bly. Figure 61 1. Body 3. Detent groove 2. Detent post Multi Pro 1200/1250 Page 6 - - 55 Spray System...
  • Page 156: Spray Boom Hinge

    2. Loosen hose clamp and remove supply hose from removed, inspect bushings and pivot pin for damage or tee fitting (item 6) on spray boom. wear. 3. Support spray boom to prevent it from falling. Spray System Page 6 - - 56 Multi Pro 1200/1250...
  • Page 157 (Fig. 64). 6. Connect supply hose to tee fitting on spray boom and secure with hose clamp. 7. Lubricate grease fittings on boom hinge. Figure 64 Multi Pro 1200/1250 Page 6 - - 57 Spray System...
  • Page 158: Boom Actuator

    10. Boom pivot bracket 3. Boom frame 7. Flange head screw (2 used) 11. Clevis pin (2 used) 4. Washer plate 8. Pivot pin (2 used) 12. Cotter pin (2 used) Spray System Page 6 - - 58 Multi Pro 1200/1250...
  • Page 159 4. Connect boom actuator to machine wire harness. 4. Remove cotter pin (item 12) from clevis pin (item 11). Support boom actuator and slide clevis pin from boom pivot bracket. Remove actuator from machine. Multi Pro 1200/1250 Page 6 - - 59 Spray System...
  • Page 160: Boom Actuator Service

    Remove actuator from vise and install on ma- seal. The freeplay should be less than 0.100” (2.5 mm). chine. If excessive freeplay is found, bleed air from actuator. Spray System Page 6 - - 60 Multi Pro 1200/1250...
  • Page 161 If actuator disposal is necessary, remove hydraulic oil from actuator before disposal. 1. Open actuator reservoir (see Steps 1 through 4 in Actuator Air Bleeding above). 2. Drain oil from actuator. Multi Pro 1200/1250 Page 6 - - 61 Spray System...
  • Page 162 This page is intentionally blank. Spray System Page 6 - - 62 Multi Pro 1200/1250...
  • Page 163 ....... Transaxle Assembly ..... . Multi Pro 1200/1250 Page 7 - - 1 Drive Train...
  • Page 164: Specifications

    Pump Drive Gearbox Reducing Worm Gear for Pump Drive and Through Shaft for Transaxle Drive Fluid Capacity 0.6 quarts (0.57 liters) Fluid Type Mobil SHC 634 Synthetic Lubricant (Toro Part No. 104--8772) Drive Train Page 7 - - 2 Multi Pro 1200/1250...
  • Page 165: General Information

    The driven clutch responds to mum efficiency. changes in load from the transaxle and spray pump and is mounted to the pump drive gearbox input shaft. Multi Pro 1200/1250 Page 7 - - 3 Drive Train...
  • Page 166: Drive Clutch

    6. Roller (3 used) 3. Spider assembly 7. Spring 4. Cover Figure 3 1. Pump drive clutch 4. Steering pump 2. Driven clutch 5. Drive clutch 3. Engine 6. Pump drive gearbox Drive Train Page 7 - - 4 Multi Pro 1200/1250...
  • Page 167: Driven Clutch

    Figure 5 1. Pump drive clutch 4. Steering pump 2. Driven clutch 5. Drive clutch 3. Engine 6. Pump drive gearbox Multi Pro 1200/1250 Page 7 - - 5 Drive Train...
  • Page 168 This page is intentionally blank. Drive Train Page 7 - - 6 Multi Pro 1200/1250...
  • Page 169: Special Tools

    Special Tools Order special tools from your Toro distributor. Some tools may also be available from a local supplier. Drive Clutch Removal Tool This tool is required to remove the drive clutch from the tapered crankshaft of the engine. It is placed in the threaded hole of the fixed clutch sheave after the clutch retaining cap screw has been removed.
  • Page 170: Troubleshooting

    Loose shift lever on transaxle. Cable clamp securing cables near shifter is loose. Sliding gear tight on transaxle shaft or splines. Transaxle synchronizing unit damaged. Transaxle sliding gear teeth damaged. Transaxle synchro keys damaged. Drive Train Page 7 - - 8 Multi Pro 1200/1250...
  • Page 171 Lack of spring pressure on transaxle shift fork det- ent ball. Badly worn transaxle bearings. Overheating of transaxle. Oil level too high in transaxle. Excessive hydraulic load (see Chapter 8 -- Hydraulic System). Multi Pro 1200/1250 Page 7 - - 9 Drive Train...
  • Page 172: Adjustments

    Figure 7 cotter pins. 1. Shift cable jam nut 4. Shift cable (1/reverse) 2. Clevis pin 5. Shift cable (2/3) 6. Check shift lever for proper operation. 3. Clevis jam nut Drive Train Page 7 - - 10 Multi Pro 1200/1250...
  • Page 173: Service And Repairs

    2. To install CVT drive belt: A. Place new belt around drive clutch. B. Position belt to driven clutch. While rotating the driven clutch, route belt into position on driven clutch. Multi Pro 1200/1250 Page 7 - - 11 Drive Train...
  • Page 174: Drive Clutch

    To avoid possible burns, allow vice and Repairs section of Chapter 3 -- Kohler Gasoline all components to cool before working on the Engine). drive clutch. Drive Train Page 7 - - 12 Multi Pro 1200/1250...
  • Page 175 Drive Belt Service in this section). 5. Install the spray tank to the machine (see Spray Tank Installation in the Service and Repairs section of Chap- ter 6 -- Spray System). Multi Pro 1200/1250 Page 7 - - 13 Drive Train...
  • Page 176: Drive Clutch Service

    (item 9). Discard lock nuts after removal. 5. Slide shoulder screw from each of the clutch weights Figure 12 (item 10) and then remove weights from clutch. 1. Spider 2. Cover Drive Train Page 7 - - 14 Multi Pro 1200/1250...
  • Page 177 4. Secure cover to the movable sheave with six (6) flange head screws in a crossing pattern and in three (3) steps. Final torque on screws should be from 105 to 120 in- -lb (11.9 to 13.5 N- -m). Multi Pro 1200/1250 Page 7 - - 15 Drive Train...
  • Page 178: Driven Clutch

    4. Remove lock nut and flat washer securing the driven clutch to the input shaft of the pump drive gearbox. Drive Train Page 7 - - 16 Multi Pro 1200/1250...
  • Page 179 3. Moveable sheave 7. Retaining ring fixed and moveable sheaves are aligned. Also, make 4. Inner spring retainer sure that the retaining ring is fully seated in groove after installation. Multi Pro 1200/1250 Page 7 - - 17 Drive Train...
  • Page 180: Pump Drive Gearbox

    To avoid possible burns, allow in the Service and Repairs section of Chapter 3 -- Kohler all components to cool before working on the Gasoline Engine). pump drive gearbox. Drive Train Page 7 - - 18 Multi Pro 1200/1250...
  • Page 181 C. Slide transaxle driveshaft yoke from pump drive gearbox lubricant is Mobil SHC 634 Synthetic Lubri- gearbox shaft. cant (Toro Part No. 104- -8772). IMPORTANT: When removing driven clutch, note 5. Check and adjust gearbox lubricant level (see Oper- quantity of washers (item 25) that exist on gearbox ator’s Manual).
  • Page 182: Pump Drive Gearbox Service

    (item 6 and 25) to gearbox housing. Remove caps with bearing cups and O--rings. Remove shims. Note 6. Carefully pull worm (input) shaft (item 26) with bear- shim location for assembly purposes. ings from housing. Drive Train Page 7 - - 20 Multi Pro 1200/1250...
  • Page 183 8 ft- -lb (10.8 N- -m). thickness at one input cap should be within 0.005” (0.13 mm) of the total shim thickness of the other cap. Multi Pro 1200/1250 Page 7 - - 21 Drive Train...
  • Page 184 C. Taking care not to damage O--rings or shims, install caps over output shaft and into housing. D. Apply Loctite #242 to cap screw threads. Install and torque cap screws 8 ft- -lb (10.8 N- -m). Drive Train Page 7 - - 22 Multi Pro 1200/1250...
  • Page 185 This page is intentionally blank. Multi Pro 1200/1250 Page 7 - - 23 Drive Train...
  • Page 186: Stub Axle And Driveshaft

    Slide driveshaft outward and remove from transaxle. NOTE: Loosening driveshaft at transaxle will allow eas- ier driveshaft removal from end yoke. Drive Train Page 7 - - 24 Multi Pro 1200/1250...
  • Page 187 4. Insert stub axle with greased bearing and thin spacer ful to not damage the seal during installation. into axle housing. Be careful to not damage the bearing seal during installation. Multi Pro 1200/1250 Page 7 - - 25 Drive Train...
  • Page 188 8. Position driveshaft cross to the end yoke. Install the straps to secure driveshaft bearing cross to the end yoke. Torque bolts from 200 to 250 in- -lb (22.6 to 28.2 N- -m). Drive Train Page 7 - - 26 Multi Pro 1200/1250...
  • Page 189: Driveshaft Universal Joint Service

    7. Lock nut (2 per yoke) 3. Snap ring 8. Clamp yoke 4. Cross and bearing kit 9. Hardened washer 5. Yoke and hub 10. Cap screw (2 per yoke) Multi Pro 1200/1250 Page 7 - - 27 Drive Train...
  • Page 190 38. Lock nut 12. Transaxle strap mount (2 used) 26. Shift lever 39. Transaxle driveshaft 13. Flange nut (4 used) 27. Suction hose 40. Socket head screw 14. Hydraulic return hose Drive Train Page 7 - - 28 Multi Pro 1200/1250...
  • Page 191: Transaxle Removal

    3. Hardened washer 7. End yoke 4. Cap screw (2 per shaft) 16.Remove oil strainer from transaxle. Locate, remove and discard strainer O--ring. Multi Pro 1200/1250 Page 7 - - 29 Drive Train...
  • Page 192: Transaxle Installation

    Cable Adjustment in the Adjustments section of this 16.Fill transaxle with Dexron III ATF oil (see Operator’s chapter). Manual). 12.Secure shift cable ends to shift arm levers of trans- axle with clevis pins and cotter pins. Drive Train Page 7 - - 30 Multi Pro 1200/1250...
  • Page 193: Transaxle Service

    6. Loosen cap screws and separate center plate from transaxle case. Note dowel pin locations in transaxle case. Remove seal cap (item 1), shims (items 2 and 4) and snap ring (item 3) from center plate. Figure 36 Multi Pro 1200/1250 Page 7 - - 31 Drive Train...
  • Page 194 9. Remove, all at the same time, reduction shaft as- NOTE: This shaft not sembly (item 1), 1st--reverse fork shaft assembly (item used on Multi Pro 2) and countershaft assembly (item 3) Figure 39 Drive Train Page 7 - - 32 Multi Pro 1200/1250...
  • Page 195 13.Loosen cap screws (item 1) and remove R.H. axle shaft assembly (item 2) from transaxle case. Figure 42 14.Slide differential gear assembly (item 1) from trans- axle case. Figure 43 Multi Pro 1200/1250 Page 7 - - 33 Drive Train...
  • Page 196 (item 1) and slide speed sensor (item 2) from upper cov- er (item 4). 20.Loosen and remove cap screws (item 3) that secure upper cover to transaxle case. Remove upper cover (item 4) from case. Figure 46 Drive Train Page 7 - - 34 Multi Pro 1200/1250...
  • Page 197 (item 13). Inspect needle bearings and replace if necessary. J. Use a bearing puller to remove bearing (item 14). K. Remove 14T gear (item 15), retaining ring (item 16) and 20T gear (item 17). Figure 48 Multi Pro 1200/1250 Page 7 - - 35 Drive Train...
  • Page 198 (item 15) and thrust washer (item 16). Inspect needle bearings and replace if necessary. Measure thick- ness of thrust washer. Replace thrust washer if thick- ness is less than 0.0709” (1.8 mm). Figure 50 Drive Train Page 7 - - 36 Multi Pro 1200/1250...
  • Page 199 C. Remove countershaft gear (item 3). D. Remove retaining ring (item 6) and collar (item 4) from shaft. E. Use a bearing puller to remove two (2) bearings (item 8) from shaft. Figure 52 Multi Pro 1200/1250 Page 7 - - 37 Drive Train...
  • Page 200 H. Remove two (2) differential pinion gears (item 9) and two (2) washers (item 10). I. Remove L.H. side gear (item 11), R.H. side gear (item 12) and two (2) thrust washers (item 13). Figure 55 Drive Train Page 7 - - 38 Multi Pro 1200/1250...
  • Page 201 C. Use a bearing puller to remove bearing (item 4) from axle shaft. Locate and remove washer (item 6). D. Remove oil seal (item 5) from seal cover. R.H. AXLE SHAFT Figure 57 Multi Pro 1200/1250 Page 7 - - 39 Drive Train...
  • Page 202: Transaxle Inspection

    (Fig. 60). If synchro gear has the following I.D., replace the synchro gear: 40T I.D. exceeds 1.027” (26.08 mm) 47T I.D. exceeds 1.145” (29.08 mm) Figure 60 Drive Train Page 7 - - 40 Multi Pro 1200/1250...
  • Page 203 (Fig. 63). 7. Inspect retaining ring (item 3) and shims (items 2 and 4) for damage (Fig. 63). Replace all parts if any compo- nent is cracked or broken. Figure 63 Multi Pro 1200/1250 Page 7 - - 41 Drive Train...
  • Page 204 O.D. of needle bearing area is less than reject size specified in Figure 66, replace the reduction shaft. STD. O.D. 0.866” (22 mm) Reject O.D. 0.864” (21.95 mm) Figure 66 Drive Train Page 7 - - 42 Multi Pro 1200/1250...
  • Page 205 E. Inspect differential case for wear in side gears and pinion shaft mating area. Replace the case if ma- chined surfaces are scored or if the pinion shaft fits loosely in the bore. Multi Pro 1200/1250 Page 7 - - 43 Drive Train...
  • Page 206: Transaxle Assembly

    R.H. axle shaft. Make sure that retaining ring is fully seated in axle groove. R.H. AXLE SHAFT D. Insert washer (item 6) into seal cover. Figure 70 E. Install R.H. axle shaft assembly into seal cover. Drive Train Page 7 - - 44 Multi Pro 1200/1250...
  • Page 207 N. Use a press to install bearing (item 1) onto differ- ential case. O. Use a press to install bearing (item 3) onto differ- ential case. P. Install retaining ring (item 2) to secure bearing. Multi Pro 1200/1250 Page 7 - - 45 Drive Train...
  • Page 208 C. Install countershaft gear (item 3) onto shaft. D. Install retaining ring (item 5). E. Slide collar (item 2) onto shaft. F. Use a press to install new bearing (item 1). Figure 75 Drive Train Page 7 - - 46 Multi Pro 1200/1250...
  • Page 209 B. Install shifter (item 1) onto hub assembly (item 2). Figure 77 C. Insert two (2) springs (item 1) into hub to secure hub assembly. Pay attention to direction of spring. Figure 78 Figure 79 Multi Pro 1200/1250 Page 7 - - 47 Drive Train...
  • Page 210 J. Use a press to install bearing (item 1) onto shaft. Figure 81 9. Assemble reverse shaft: A. Install 33T gear (item 2) onto reverse shaft (item B. Use a press to install bearings (item 3 and 1). Figure 82 Drive Train Page 7 - - 48 Multi Pro 1200/1250...
  • Page 211 (item 3). Install washer and snap ring (item 2) to shaft. Oil groove on washer must face the gear. N. Use a press to install bearing (item 1) onto shaft. Multi Pro 1200/1250 Page 7 - - 49 Drive Train...
  • Page 212 Figure 85 1. Shift arm (2- -3) 5. Cap screw 2. Flat washer 6. Lock washer 3. Lock nut 7. Keeper plate 4. Shift arm lever (1- -R) 8. Oil seal Drive Train Page 7 - - 50 Multi Pro 1200/1250...
  • Page 213 Multi Pro Figure 87 13.Install main shaft together with 2nd--3rd fork shaft. Insert head of shift arm into groove of fork (item 1) while installing. Figure 88 Figure 89 Multi Pro 1200/1250 Page 7 - - 51 Drive Train...
  • Page 214 22 ft- -lb (24.5 to 29.5 N- -m) to secure center plate. D. Apply multi--purpose grease onto lips of main shaft oil seal. Insert oil seal into center plate flush Figure 91 with face of housing. Drive Train Page 7 - - 52 Multi Pro 1200/1250...
  • Page 215 1. Countershaft 4. Retaining ring 2. Bearing 5. Center plate 3. Shims 6. Sealing cap 17.Install retaining ring into the groove of the center plate (Fig. 93 and 94). Figure 94 Multi Pro 1200/1250 Page 7 - - 53 Drive Train...
  • Page 216 Figure 95 19.Insert sealing cap (item 1) flush with face of center plate. Make sure not to insert sealing cap too far. Pay attention to direction of sealing cap. Figure 96 Drive Train Page 7 - - 54 Multi Pro 1200/1250...
  • Page 217 (24.5 to 29.5 N- -m) screw (item 1). Tighten cap screws to a torque of 18 to 22 ft- -lb (24.5 to 29.5 N- -m). Check operation of shifters and detent. Figure 99 Multi Pro 1200/1250 Page 7 - - 55 Drive Train...
  • Page 218 B. Install axle shaft assembly (item 2) and secure with cap screws. Torque cap screws (item 1) from 18 to 22 ft- -lb (24.5 to 29.5 N- -m). Figure 102 Drive Train Page 7 - - 56 Multi Pro 1200/1250...
  • Page 219 B. If backlash exceeds the target range, increase to- tal thickness of shim set until correct backlash is achieved. Figure 105 NOTE: The thickest shim should be installed against the bearing. Multi Pro 1200/1250 Page 7 - - 57 Drive Train...
  • Page 220 (item 4). Install cap screw (item 1) with lock wash- er to secure sensor. Figure 107 32.Position input shaft cover plate (item 2) to transaxle and secure it with three (3) cap screws (item 1). Figure 108 Drive Train Page 7 - - 58 Multi Pro 1200/1250...
  • Page 221 ......Seat Base (Multi Pro 1200) ....
  • Page 222: Specifications

    55 to 65 ft--lb (75 to 88 N--m) Rear wheel lug nut torque 55 to 65 ft--lb (75 to 88 N--m) Front wheel toe--in 0 to 1/4 inch (0 to 6 mm) Chassis Page 8 - - 2 Multi Pro 1200/1250...
  • Page 223: Adjustments

    D. Reinstall cap screw in new position and secure with lock nut. Torque from 130 to 150 ft- -lb (176 to 203 N- -m). E. Lower machine to ground and repeat steps 1 to 3 as needed. Multi Pro 1200/1250 Page 8 - - 3 Chassis...
  • Page 224: Service And Repairs

    11. Cotter pin 3. Washer 8. Socket head screw (4 per wheel) 12. Seal 4. Wheel and tire assembly 9. Front brake assembly 13. Lug nut (5 per wheel) 5. Wheel bearing cone Chassis Page 8 - - 4 Multi Pro 1200/1250...
  • Page 225 B. Pack both bearings with grease. Install greased spotted or excessively rusted. Minor scoring in brake inner bearing into the cup on inboard side of the drum can be removed with sandpaper. wheel hub. Multi Pro 1200/1250 Page 8 - - 5 Chassis...
  • Page 226 Drive machine while making 6 to 7 normal stops at about 200 ft (60 m) intervals while traveling at moderate 10.Lower machine to ground. speed. 11. Bleed brakes (see Bleed Brake System in this sec- tion). Chassis Page 8 - - 6 Multi Pro 1200/1250...
  • Page 227 This page is intentionally blank. Multi Pro 1200/1250 Page 8 - - 7 Chassis...
  • Page 228: Front Brake Service

    2. Remove upper and lower springs from brake shoes. wheel cylinder to backing plate. Remove wheel cylin- der from backing plate. 3. Remove shoe hold down cups and springs that se- cure the brake shoes to the backing plate. Chassis Page 8 - - 8 Multi Pro 1200/1250...
  • Page 229 B. Pin surfaces on adjuster levers. C. Anchor block surfaces that contact shoe webs. D. Both surfaces of belleville washers that are posi- tioned between adjuster levers and backing plate (if removed). Multi Pro 1200/1250 Page 8 - - 9 Chassis...
  • Page 230: Rear Wheels And Brakes

    Use a hooked piece of wire to pull pawl away from star wheel, then turn star wheel. Pull brake drum from ma- chine. Chassis Page 8 - - 10 Multi Pro 1200/1250...
  • Page 231 200 ft (60 m) intervals while traveling at moderate B. Install stub axle (see Stub Axle and Driveshaft in speed. the Service and Repairs section of Chapter 7 -- Drive Train). Multi Pro 1200/1250 Page 8 - - 11 Chassis...
  • Page 232: Rear Brake Service

    11. Hold down spring (2 used per wheel) 17. Hold down pin (2 used per wheel) 5. Lower spring 12. Bleed screw 18. Inspection plug 6. Brake adjuster assembly 13. Cap 19. Cable guide 7. Brake cylinder assembly Chassis Page 8 - - 12 Multi Pro 1200/1250...
  • Page 233 C. Inspect hold down pins for damage. Replace as necessary. 2. Inspect brake adjuster, parking brake lever and park- ing brake pawl for damage or wear. Replace compo- nents as necessary. Multi Pro 1200/1250 Page 8 - - 13 Chassis...
  • Page 234: Brake Lines

    When performing service work on the Multi Pro brake lines, make sure to clean brake components before dis- assembly. Use Figure 9 as a guide for removal and installation of hydraulic brake lines. Chassis Page 8 - - 14 Multi Pro 1200/1250...
  • Page 235: Parking Brake Cables

    8. Adjust parking brake (see Operator’s Manual). 1. Cable clip 3. Cable guide Check operation of brakes before returning machine to 2. Parking brake lever 4. Brake backing plate regular service. Multi Pro 1200/1250 Page 8 - - 15 Chassis...
  • Page 236: Brake Master Cylinder Service

    Install lower end of dust cover to housing. 5. Push in on push rod so stop pin can be installed to retain secondary piston assembly, then install flange seal and reservoir. Chassis Page 8 - - 16 Multi Pro 1200/1250...
  • Page 237: Bleed Brake System

    6. After bleeding of brakes is completed, test vehicle to wheel cylinder until pedal fades to floor. Close bleeder make sure brakes are operating correctly and that brake valve before releasing pedal. pedal is solid. Multi Pro 1200/1250 Page 8 - - 17 Chassis...
  • Page 238: Front Suspension

    8. A- -arm 18. Ball joint seal 28. Slotted hex nut 9. Cotter pin 19. Ball joint 29. Jam nut (LH thread) 10. Slotted hex nut 20. Cap screw 30. Tie rod Chassis Page 8 - - 18 Multi Pro 1200/1250...
  • Page 239 90 ft- -lb (109 to 122 N- -m). If necessary for cotter pin installation, tighten slotted hex nut further until cotter pin can be installed. 2. After assembly is complete, make sure that compo- nents do not contact hoses and/or wires. Multi Pro 1200/1250 Page 8 - - 19 Chassis...
  • Page 240: Steering Assembly

    24. Slotted hex nut 7. Thrust washer 16. Slotted hex nut 25. A- -arm (RH shown) 8. Bearing 17. Tie rod end (LH thread) 26. Axle (RH shown) 9. Slotted hex nut 18. Spindle Chassis Page 8 - - 20 Multi Pro 1200/1250...
  • Page 241 7. Check and adjust front wheel toe--in (see Operator’s Manual). Check front suspension (see Front Suspen- 6. Disassemble steering components as needed using sion in the Adjustments section of this chapter). Figure 16 as a guide. Multi Pro 1200/1250 Page 8 - - 21 Chassis...
  • Page 242: Tie Rod End Replacement

    NOTE: Right and left tie rods should be identical length. 5. Check and adjust front wheel toe--in (see Operator’s Manual) and front suspension (see Front Suspension in the Adjustments section of this chapter). Chassis Page 8 - - 22 Multi Pro 1200/1250...
  • Page 243: Ball Joint Replacement

    4. Position upper ball joint to spindle or lower ball joint 3. Retaining ring 8. Slotted hex nut 4. Ball joint 9. Flat washer to A--arm. 5. Ball joint seal 10. A- -arm (RH shown) Multi Pro 1200/1250 Page 8 - - 23 Chassis...
  • Page 244: Seat Base (Multi Pro 1200)

    Seat Base (Multi Pro 1200) FRONT RIGHT Figure 19 1. Seat base 7. L bracket (3 used) 12. Seal (2 used) 2. Flange head screw (8 used) 8. Phillips head screw 13. Seat belt bracket 3. Spacer (6 used) 9. Console 14.
  • Page 245 6. Secure control panels to seat base. 7. Secure seat assembly to machine with clevis pin and hitch pin. 8. Connect positive (+) cable and then negative (--) cable to battery. Multi Pro 1200/1250 Page 8 - - 25 Chassis...
  • Page 246: Seat Base (Multi Pro 1250)

    11. Seat belt bracket 3. Spacer (6 used) 8. Well nut 12. Seal (2 used) 4. Rubber washer (6 used) 9. Phillips head screw 13. Spray control panel 5. Spacer (2 used) Chassis Page 8 - - 26 Multi Pro 1200/1250...
  • Page 247 5. Secure control panels to seat base. 6. Secure seat assembly to machine with clevis pin and hitch pin. 7. Connect positive (+) cable and then negative (--) cable to battery. Multi Pro 1200/1250 Page 8 - - 27 Chassis...
  • Page 248 This page is intentionally blank. Chassis Page 8 - - 28 Multi Pro 1200/1250...
  • Page 249 ..... . Manual Boom Operation ....Multi Pro 1200/1250 Page 9 - - 1 Sonic Boom System (Optional Kit)
  • Page 250: General Information

    5. Make sure spray system pressure is relieved before 3. Disengage all power and wait until all moving parts loosening any system component. have stopped. Sonic Boom System (Optional Kit) Page 9 - - 2 Multi Pro 1200/1250...
  • Page 251: Special Tools

    Electronic control unit (ECU) inputs and outputs for the Sonic Boom System can be checked using the Diag- nostic Display. Toro Part Number for Diagnostic Display: 85- -4750 Toro Part Number for Overlay (English): 94- -8604 IMPORTANT: The Diagnostic Display must not be left connected to the machine.
  • Page 252: Electrical Schematic

    Electrical Schematic Sonic Boom System (Optional Kit) Page 9 - - 4 Multi Pro 1200/1250...
  • Page 253 This page is intentionally blank. Multi Pro 1200/1250 Page 9 - - 5 Sonic Boom System (Optional Kit)
  • Page 254: Sonic Boom System Operation

    Sonic Boom System Operation Sonic Boom System (Optional Kit) Page 9 - - 6 Multi Pro 1200/1250...
  • Page 255: Sprayer Operation On Level Turf

    The boom actuators will not be energized and the boom sections remain at the correct, level position. CONSISTENT BOOM HEIGHT SO ACTUATOR MOVEMENT IS NOT NECESSARY LEVEL GROUND Figure 3 Multi Pro 1200/1250 Page 9 - - 7 Sonic Boom System (Optional Kit)
  • Page 256 Sonic Boom System (Optional Kit) Page 9 - - 8 Multi Pro 1200/1250...
  • Page 257: Downward Slope In Turf Encountered

    A HIGHER BOOM HEIGHT IS DETECTED SO ACTUATOR EXTENDS TO LOWER BOOM SECTION SLOPE Figure 4 Multi Pro 1200/1250 Page 9 - - 9 Sonic Boom System (Optional Kit)
  • Page 258 Sonic Boom System (Optional Kit) Page 9 - - 10 Multi Pro 1200/1250...
  • Page 259: Rise In Turf Encountered

    A LOWER BOOM HEIGHT IS DETECTED SO ACTUATOR RETRACTS TO RAISE BOOM SECTION RISE Figure 5 Multi Pro 1200/1250 Page 9 - - 11 Sonic Boom System (Optional Kit)
  • Page 260 Sonic Boom System (Optional Kit) Page 9 - - 12 Multi Pro 1200/1250...
  • Page 261: Boom Level Changed By Operator During Automatic Operation

    The sonic boom light will flash as long as the boom actuator switch is pressed. Multi Pro 1200/1250 Page 9 - - 13 Sonic Boom System (Optional Kit)
  • Page 262 Sonic Boom System (Optional Kit) Page 9 - - 14 Multi Pro 1200/1250...
  • Page 263: Manual Boom Operation

    The boom will continue to rise until the operator releases the boom actuator switch. Multi Pro 1200/1250 Page 9 - - 15 Sonic Boom System (Optional Kit)
  • Page 264: Troubleshooting

    (20) inches. Steps derground plumbing and other machines that could in- needed for proper calibration are identified in the Sonic terfere with sensor signals. Boom Kit Installation Instructions. Sonic Boom System (Optional Kit) Page 9 - - 16 Multi Pro 1200/1250...
  • Page 265: Diagnostic Display

    Diagnostic Display, is illumi- nated. If “OUTPUTS DISPLAYED” LED is illuminated, press the toggle button on the Diagnostic Display to change to “INPUTS DISPLAYED” LED. Figure 7 Multi Pro 1200/1250 Page 9 - - 17 Sonic Boom System (Optional Kit)
  • Page 266 Sonic Boom Kit Installation Instructions for infor- sensor is the problem source (e.g. switch, circuit wiring). mation on initial sensor calibration. Sonic Boom System (Optional Kit) Page 9 - - 18 Multi Pro 1200/1250...
  • Page 267 ECU problem. to ECU outputs. If this occurs, contact your Toro Distributor for assis- tance. 5. Make sure that the “OUTPUTS DISPLAYED” LED, on lower right column of the Diagnostic Display, is illumi- 7.
  • Page 268: Troubleshooting Chart

    Electrical power from vehicle is not available (all sonic boom func- tions are affected). Both of the boom actuator 30 amp auto resetting fuses are faulty. ECU or circuit wiring is faulty. Sonic Boom System (Optional Kit) Page 9 - - 20 Multi Pro 1200/1250...
  • Page 269 Calibration of the Sonic Boom sensors is incorrect. The sonic sensor angle on both booms need adjustment. Both sonic sensors or circuit wiring are faulty. ECU or circuit wiring is faulty. Multi Pro 1200/1250 Page 9 - - 21 Sonic Boom System (Optional Kit)
  • Page 270: Service And Repairs

    The tips of the booms will remain at MULTI PRO 1200 MULTI PRO 1250 a constant distance from the ground. The boom switches can be used to raise/lower the booms when the sonic mode switch is in the automatic position.
  • Page 271: Relays

    +12 VDC is applied to ter- minal 85. The relay terminals 30 and 87A should have continuity as +12 VDC is removed from terminal 85. Multi Pro 1200/1250 Page 9 - - 23 Sonic Boom System (Optional Kit)
  • Page 272: Electronic Control Unit (Ecu)

    IMPORTANT: Before performing welding on the ma- chine, disconnect both cables from the battery and disconnect wire harness connector from the ECU. These steps will prevent damage to the machine electrical system. Sonic Boom System (Optional Kit) Page 9 - - 24 Multi Pro 1200/1250...
  • Page 273: Sonic Sensor

    The patch should be replaced if it is deteriorated or has loosened from the sensor. Inspect the foam sensor filter (item 11) for damage or ex- cessive debris buildup. Replace filter if necessary. Multi Pro 1200/1250 Page 9 - - 25 Sonic Boom System (Optional Kit)
  • Page 274 This page is intentionally blank. Sonic Boom System (Optional Kit) Page 9 - - 26 Multi Pro 1200/1250...
  • Page 275 Rise in Turf Encountered ....Toro Electronic Controller (TEC) ... . .
  • Page 276: General Information

    5. Make sure spray system pressure is relieved before 3. Disengage all power and wait until all moving parts loosening any system component. have stopped. Ultra Sonic Boom System (Rev. A) Page 9.1 - 2 Multi Pro 1200/1250...
  • Page 277: Special Tools

    Boom System. Toro electronic controller (TEC) inputs and outputs for the Ultra Sonic Boom System can be checked using the Diagnostic Display. Toro Part Number for Diagnostic Display: 85- -4750 Toro Part Number for Overlay (English): 119- -9431 IMPORTANT: The Diagnostic Display must not be left connected to the machine.
  • Page 278: Electrical Schematic

    Electrical Schematic Ultra Sonic Boom System (Rev. A) Page 9.1 - 4 Multi Pro 1200/1250...
  • Page 279 This page is intentionally blank. Multi Pro 1200/1250 Page 9.1 - 5 Ultra Sonic Boom System (Rev. A)
  • Page 280: Ultra Sonic Boom System Operation

    Ultra Sonic Boom System Operation Ultra Sonic Boom System (Rev. A) Page 9.1 - 6 Multi Pro 1200/1250...
  • Page 281: Sprayer Operation On Level Turf

    The Toro electronic controller tions are at the calibrated height. Thus, there is no need (TEC) determines the sensor distance from the ground...
  • Page 282 Ultra Sonic Boom System (Rev. A) Page 9.1 - 8 Multi Pro 1200/1250...
  • Page 283: Downward Slope In Turf Encountered

    TEC will energize the appropriate signals bounce off the turf. The Toro electronic controller electrical relays. The energized relays will lead to a (TEC) determines the sensor distance from the ground...
  • Page 284 Ultra Sonic Boom System (Rev. A) Page 9.1 - 10 Multi Pro 1200/1250...
  • Page 285: Rise In Turf Encountered

    TEC will energize the appropriate signals bounce off the turf. The Toro electronic controller electrical relays. The energized relays will lead to a (TEC) determines the sensor distance from the ground...
  • Page 286 Ultra Sonic Boom System (Rev. A) Page 9.1 - 12 Multi Pro 1200/1250...
  • Page 287: Boom Level Changed By Operator During Automatic Operation

    The Toro electronic con- tomatic sonic boom operation on that boom section. troller (TEC) determines the sensor distance from the...
  • Page 288 Ultra Sonic Boom System (Rev. A) Page 9.1 - 14 Multi Pro 1200/1250...
  • Page 289: Manual Boom Operation

    When a boom lift switch is pressed to raise a boom sec- tion unless the operator presses a boom lift switch. The tion, the Toro electronic controller (TEC) energizes the sonic boom light should not be illuminated when in the appropriate electrical relays causing the controlled manual position.
  • Page 290 This page is intentionally blank. Ultra Sonic Boom System (Rev. A) Page 9.1 - 16 Multi Pro 1200/1250...
  • Page 291: Troubleshooting

    Sonic Boom System Operation in this chapter). section. Also, use the Diagnostic Display (see Special Tools in this chapter) to test Toro electronic controller (TEC) inputs and outputs. Sonic Boom Light...
  • Page 292: Diagnostic Lamp

    Check electrical connections, controller fuses and the diagnostic lamp to determine malfunction. Make sure that the loopback connector is secured to the wire har- ness connector during machine operation. Ultra Sonic Boom System (Rev. A) Page 9.1 - 18 Multi Pro 1200/1250...
  • Page 293 (40) hours of machine operating time, the 4. Turn ignition switch to the ON position. fault cannot be retrieved from controller memory using this procedure. If necessary, contact your Toro distribu- 5. Monitor the diagnostic lamp for fault code(s). tor to retrieve older fault codes.
  • Page 294: Diagnostic Display

    Diagnostic Display The Ultra Sonic Boom System is equipped with the Toro electronic controller (TEC) which controls machine son- ic boom electrical functions. The TEC monitors various input switches (e.g. sonic boom switch, boom lift switches, sonic boom sensors) and energizes outputs (e.g.
  • Page 295 Sonic Boom Kit Installation Instructions for sensor is the problem source (e.g. switch, circuit wiring). information on initial sensor calibration. Multi Pro 1200/1250 Page 9.1 - 21 Ultra Sonic Boom System (Rev. A)
  • Page 296 LED’s are not correctly illuminated, this may indicate a TEC prob- 3. Connect the Diagnostic Display connector to the har- lem. If this occurs, contact your Toro Distributor for ness communication port connector. Make sure correct assistance.
  • Page 297 No TEC output to energize relays to raise left boom: LED OFF LEFT LOWER TEC output exists to energize relays to lower left boom: LED ON No TEC output to energize relays to lower left boom: LED OFF Multi Pro 1200/1250 Page 9.1 - 23 Ultra Sonic Boom System (Rev. A)
  • Page 298: Troubleshooting Chart

    Electrical power from vehicle is not available (all sonic boom func- tions are affected). A problem exists with both boom actuators. The Toro electronic controller (TEC) or circuit wiring is faulty. The LED’s on one of the sonic boom Sonic boom sensor or circuit wiring is faulty.
  • Page 299 The sonic boom sensor is incorrectly installed. Sonic boom sensor or circuit wiring for affected boom is faulty. The Toro electronic controller (TEC) or circuit wiring is faulty. Neither boom automatically follows Sonic boom switch is not in the AUTOMATIC position.
  • Page 300: Service And Repairs

    1. Upper, extreme left fuse 4. Upper right fuse 2. Upper middle left fuse 5. Auto resetting fuse 3. Upper, middle right fuse 6. Auto resetting fuse Ultra Sonic Boom System (Rev. A) Page 9.1 - 26 Multi Pro 1200/1250...
  • Page 301: Sonic Boom Switch

    Sonic Boom Switch The sonic boom switch is used as an input for the Toro MULTI PRO 1200 electronic controller (TEC) to activate the Ultra Sonic Boom System. This switch has two (2) positions: auto- matic and manual. The sonic boom switch is located on the spray control console (Figs.
  • Page 302: Sonic Sensors

    (Figs. 19, 20 and 21). During sprayer op- eration with the sonic boom switch in the automatic posi- tion, the sonic sensors will provide inputs for the Toro electronic controller (TEC) to keep the booms at a 14 to 16 ft- -lb (19 to 21 N- -m) constant distance from the ground.
  • Page 303 Figure 23 1. Yellow LED 3. Red LED 2. Green LED 4. Yellow LED Multi Pro 1200/1250 Page 9.1 - 29 Ultra Sonic Boom System (Rev. A)
  • Page 304: Relays

    9. Secure relay to mount plate and connect wire har- actuator and the other two (2) relays control the left ness connector to relay. Secure mount plate to machine boom actuator. The Toro electronic controller (TEC) frame. controls the operation of the relays. The appropriate...
  • Page 305 Toro Electronic Controller (TEC) The Ultra Sonic Boom System uses the Toro Electronic Controller (TEC) to control electrical system operation. The TEC is attached to a mounting plate under the dash panel (Fig. 26). Power is provided to the TEC when the vehicle ignition switch is ON.
  • Page 306 This page is intentionally blank. Ultra Sonic Boom System (Rev. A) Page 9.1 - 32 Multi Pro 1200/1250...
  • Page 307 Electrical Drawings Table of Contents ELECTRICAL SCHEMATICS Vehicle Electrical Schematic: Multi Pro 1200/1250 3 Spray System Electrical Schematic: Multi Pro 1200 ........
  • Page 308 This page is intentionally blank. Electrical Drawings Page 10 - - 2 Multi Pro 1200/1250...
  • Page 309 Multi Pro 1200/1250 Vehicle Electrical Schematic All relays and solenoids are shown as de- - energized. All ground wires are black. GROUND BLOCK (- -) Wire harness connector numbers are identified on schematic. BATTERY (GRP 26, 540 CCA) CHASSIS GRD ENGINE GRD P17&J18...
  • Page 310 Multi Pro 1200 Spray System RIGHT BOOM Electrical Schematic ACTUATOR All relays and solenoids are shown as de- - energized. All ground wires are black. (LOWER) Wire harness connector numbers are identified on schematic. (RAISE) LEFT BOOM ACTUATOR (LOWER) (RAISE)
  • Page 311 RIGHT BOOM ACTUATOR Multi Pro 1250 Spray System Electrical Schematic RELAY (LOWER) All relays and solenoids are shown as de- - energized. All ground wires are black. Wire harness connector numbers are identified on schematic. RELAY (RAISE) LEFT BOOM ACTUATOR RELAY (LOWER) RELAY (RAISE) MASTER BOOM...
  • Page 312 Multi Pro 1200/1250 Start Circuit Power Current GROUND BLOCK (- -) Control Current Indicator/Gauge Current BATTERY (GRP 26, 540 CCA) CHASSIS GRD ENGINE GRD P17&J18 G,M,A B,L,A START B,L,S LEFT ACTUATOR POWER (30A RESETTABLE) RIGHT ACTUATOR POWER (30A RESETTABLE) BU/BK...
  • Page 313 Multi Pro 1200/1250 Run Circuit Power Current GROUND BLOCK Control Current (- -) Indicator/Gauge Current BATTERY (GRP 26, 540 CCA) CHASSIS GRD ENGINE GRD P17&J18 G,M,A B,L,A START B,L,S LEFT ACTUATOR POWER (30A RESETTABLE) RIGHT ACTUATOR POWER (30A RESETTABLE) BU/BK...
  • Page 314 Multi Pro 1200/1250 Neutral Engine Speed Control Circuit GROUND BLOCK Power Current (- -) Control Current BATTERY Indicator/Gauge Current (GRP 26, 540 CCA) CHASSIS GRD ENGINE GRD P17&J18 G,M,A B,L,A START B,L,S LEFT ACTUATOR POWER (30A RESETTABLE) RIGHT ACTUATOR POWER (30A RESETTABLE)
  • Page 315 RIGHT BOOM ACTUATOR Multi Pro 1200 Spray Circuit Pump Switch ON (LOWER) Power Current Control Current Indicator/Gauge Current (RAISE) LEFT BOOM ACTUATOR (LOWER) (RAISE) (OPTIONAL KIT) (ENERGIZED) (ENERGIZED) NOTE: WHEN THE PUMP SWITCH IS PRESSED TO THE MOMENTARY ON POSITION, SWITCH...
  • Page 316 Multi Pro 1250 RIGHT BOOM ACTUATOR Spray Circuit Master Boom Switch ON RELAY (LOWER) Pump Switch and All Spray Switches ON Power Current Control Current Indicator/Gauge Current RELAY (RAISE) LEFT BOOM ACTUATOR RELAY (LOWER) RELAY (RAISE) MASTER BOOM SWITCH (OPTIONAL KIT) BLACK CLEAR SHIELD...
  • Page 317 Multi Pro 1250 RIGHT BOOM ACTUATOR Spray Circuit Master Boom Switch ON RELAY (LOWER) Pump, Center Spray and Right Spray Switches ON Left Spray Switch Turned To OFF Power Current Control Current Indicator/Gauge Current RELAY (RAISE) LEFT BOOM ACTUATOR RELAY (LOWER) RELAY (RAISE) MASTER BOOM SWITCH...
  • Page 318 Multi Pro 1250 RIGHT BOOM ACTUATOR Spray Circuit (Master Boom Switch OFF) RELAY (LOWER) (Spray Pump and All Boom Switches ON) Power Current Control Current Indicator/Gauge Current RELAY (RAISE) LEFT BOOM ACTUATOR RELAY (LOWER) RELAY (RAISE) MASTER BOOM SWITCH (OPTIONAL KIT) BLACK CLEAR SHIELD...
  • Page 319 RIGHT BOOM ACTUATOR Multi Pro 1250 Spray Circuit Application Rate (Increase Shown) RELAY (LOWER) Power Current Control Current Indicator/Gauge Current RELAY (RAISE) LEFT BOOM ACTUATOR RELAY (LOWER) RELAY (RAISE) MASTER BOOM SWITCH (OPTIONAL KIT) BLACK CLEAR SHIELD RATE LOCKOUT SWITCH (ON) APPLICATION RATE SWITCH...
  • Page 320 HEADLIGHT SPARE SWITCH SWITCH GROUND 3 2 1 8 RIGHT ACTUATOR POWER BLOCK IGNITION INPUT SWITCH AUXILIARY FUSE OUTPUT BLOCK ACCESSORY SPEED LOCK SOLENOID MODULE ENERGIZE SPEED LOCK COIL Multi Pro 1200/1250 Main Wire Harness Page 10 - - 14...
  • Page 321 NEUTRAL HOUR METER SWITCH GREEN/RED SP02 SP03 BLACK ”G” VOLT METER ”I” BLACK PINK START RELAY BLUE/WHITE GREEN/RED WHITE BLACK WHITE ENGINE CONNECTION LEFT HEADLIGHT RIGHT HEADLIGHT HEADLIGHT SWITCH Multi Pro 1200/1250 Main Wire Harness Page 10 - - 15...
  • Page 322 Multi Pro 1200 Spray System Wire Harness Page 10 - - 16...
  • Page 323 BLACK PINK PINK BLACK BLACK BLACK ORANGE YELLOW GREEN BLUE VIOLET GRAY BLACK PINK Multi Pro 1200 Spray System Wire Harness Page 10 - - 17...
  • Page 324 REGULATING VALVE MASTER BOOM SWITCH RATE LOCKOUT KEY SWITCH APPLICATION RATE SWITCH Multi Pro 1250 Spray System Wire Harness Page 10 - - 18...
  • Page 325 RED/YELLOW MASTER PINK BOOM SWITCH BROWN RED/BLACK PINK BLACK YELLOW BLACK YELLOW ORANGE YELLOW GREEN BLACK YELLOW BLACK BROWN BLACK PINK SHIELD YELLOW YELLOW BLACK CLEAR BLUE BLACK BLACK ORANGE ORANGE/BLUE ORANGE/BLACK REGULATING VALVE BLACK APPLICATION BLACK RATE SWITCH RED/WHITE RED/WHITE RATE LOCKOUT KEY SWITCH...
  • Page 326 This page is intentionally blank. Page 10 - - 20...

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