Table of Contents
Related Manuals for Toro 39988
Summary of Contents for Toro 39988
- Page 1 Form No. 3360-281 Rev A Commercial Walk-Behind Mower Fixed Deck, Pistol Grip, Hydro Drive with a 48in TURBO FORCE ® Cutting Unit Model No. 39988—Serial No. 280000001 and Up Register at www.Toro.com. Original Instructions (EN)
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Page 2: Table Of Contents
Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Contents Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers Introduction.............. - Page 3 Attachments/Accessories........13 Replacing the Mower Belt ........39 Operation..............13 Adjusting the Mower Belt Tension ...... 40 Adding Fuel ............13 Hydraulic System Maintenance ....... 42 Think Safety First ..........14 Servicing the Hydraulic System ......42 Operating the Parking Brake ....... 14 Mower Deck Maintenance ........
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Page 4: Safety
Safety – Never remove gas cap or add fuel with engine running. Allow engine to cool before refueling. Do not smoke. Note: The addition of attachments made by – Never refuel or drain the machine indoors. other manufacturers that do not meet American National Standards Institute certification will cause •... -
Page 5: Toro Mower Safety
The following list contains safety information specific to Toro products and other safety information you must • Keep nuts and bolts tight, especially the blade know. - Page 6 • Use only genuine replacement parts to ensure that original standards are maintained. • Check brake operation frequently. Adjust and service as required.
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Page 7: Slope Chart
Slope Chart... -
Page 8: Safety And Instructional Decals
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 98-0776 1-523552 98-5130 1. Warning—read the Operator’s Manual for instructions on torquing the blade bolt/nut to 75-80 ft-lb (102-106 N-m). - Page 9 105-4109 105-4110 99-3943 1. Engine 106-0699 103—2103 106-2733 104-8569 1. Fast 3. Slow 2. Continuous variable setting 106-2743...
- Page 10 110-2067 110-2068 1. Read the Operator’s Manual. Manufacturer’s Mark 1. Indicates the blade is identified as a part from the original machine manufacturer. 106-2738 1. Park 4. Engine—stop 7. Fast 10. Neutral 2. Drive 5. Engine—run 8. Continuous variable setting 3.
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Page 11: Setup
4 spacers below both the spindle and the caster. • View the safety video. • Fill out the registration card and mail it in or register online at www.Toro.com. • Use the oil drain hose when changing the engine oil. -
Page 12: Product Overview
Product Overview Figure 3 1. Side discharge 5. Controls 2. Mower deck 6. Handle 3. Recoil starter 7. Caster wheel Figure 4 4. Gas tank 1. Throttle control 6. Handle 2. Speed control lever 7. Drive Lever 3. Ignition switch 8. -
Page 13: Specifications
A selection of Toro approved attachments and accessories are available for use with the machine to enhance and expand its capabilities. Contact your Authorized Service Dealer or Distributor or go to www.Toro.com for a list of all approved attachments and accessories. -
Page 14: Think Safety First
Important: Do not use fuel additives containing methanol or ethanol. In certain conditions during fueling, static Add the correct amount of gas electricity can be released causing a spark stabilizer/conditioner to the gas. which can ignite the gasoline vapors. A fire Note: A fuel stabilizer/conditioner is most or explosion from gasoline can burn you and effective when mixed with fresh gasoline. -
Page 15: Starting And Stopping The Engine
If the parking brake does not hold securely, adjust it. Refer to Servicing the Parking Brake. Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Always remove the ignition key and set the parking brake when leaving the machine unattended, even if just for a few minutes. -
Page 16: Operating The Neutral Locks
Releasing the Neutral Lock 4. Let engine idle for 30 to 60 seconds before turning the engine off. 1. Squeeze the drive levers back until an increase in 5. To stop the engine, turn the ignition key to off. force is felt. 2. -
Page 17: The Safety Interlock System
The safety interlock system is designed to kill the engine when: • The Operator Presence Control (OPC) levers are released with the mower engaged and/or the speed control is out of neutral. • The speed control lever is shifted out of neutral without holding OPC levers or with the brake engaged. -
Page 18: Driving The Machine Forward And Backward
Driving the Machine Forward 2. Set the neutral locks. Refer to Operating Neutral Locks. and Backward 3. Move speed control lever to neutral position. The throttle control regulates the engine speed as Note: The speed control lever can also be used to measured in RPM (revolutions per minute). -
Page 19: Adjusting The Flow Baffle
Important: Do not start or operate the machine with the by-pass valves open. Damage to system may occur. Figure 14 1. Cam lock 3. Rotate cam to increase or Figure 13 decrease locking pressure 1. By-pass valve 2. Lever 4. Slot Adjusting the Flow Baffle Positioning the Flow Baffle The mower discharge flow can be adjusted for different... - Page 20 • Use in tall, dense grass mowing conditions. • Use in wet conditions. • Lowers the engine power consumption. • Allows increased ground speed in heavy conditions. • This position is similar to the benefits of the Toro SFS mower.
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Page 21: Transporting Machines
Side Discharging or Mulching the Grass This mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. Without the grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. -
Page 22: Adjusting The Caster Position
4. Hold the blade bolt and remove the nut. Slide the 5. Loosen, but do not remove, the 2 top axle bolts bolt down through the spindle, and change the (Figure 19). spacers as needed (Figure 18). 6. Remove the 2 lower axle bolts (Figure 19). Figure 19 1. -
Page 23: Adjusting The Handle Height
2. Remove the latch pin, slide the caster from the support, and change the spacers (Figure 20). 3. Install the caster in the support and insert the latch pin (Figure 20). Adjusting the Handle Height The handle position can be adjusted to match the operator’s height preference. -
Page 24: Height Of Cut Chart
Height of Cut Chart Number of spacers Number of 1/4 inch blade spacers below spindle below caster 1/2 inch 3/16 inch (5 (13mm) Axle Position 1 inch (26 1–1/4 inch 1–1/2 inch 1–3/4 inch 2 inch (51 (32 mm) (38 mm) (45 mm) 1–1/8 inch 1–3/8 inch... -
Page 25: Maintenance
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Recommended Maintenance Schedule(s) Maintenance Service Maintenance Procedure Interval • Change the engine oil. After the first 8 hours • Check the mower belt tension. •... -
Page 26: How To Grease
How to Grease 1. Disengage the PTO and set the parking brake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Clean the grease fittings with a rag. Make sure to scrape any paint off the front of the fitting(s). -
Page 27: Engine Maintenance
Engine Maintenance Servicing the Air Cleaner Service Interval/Specification Foam element: Clean it after every 25 operating hours. Paper element: Check it after every 50 operating hours. Replace it after every 200 operating hours or yearly, which ever comes first. Inspect the foam and paper elements and replace them if they are damaged or excessively dirty. -
Page 28: Servicing The Engine Oil
2. Place the air cleaner assembly onto the air cleaner base and secure it with the 2 wing nuts (Figure 24). 3. Place the air cleaner cover into position and tighten the cover knob (Figure 24). Servicing the Engine Oil Service Interval/Specification Figure 26 Change the engine oil as follows:... -
Page 29: Servicing The Spark Plugs
Figure 28 1. Oil filter 2. Adapter 3. Apply a thin coat of new oil to the rubber gasket on the replacement filter (Figure 28). 4. Install the replacement oil filter to the filter adapter, Figure 27 turn the oil filter clockwise until the rubber gasket 1. - Page 30 Important: Always replace the spark plugs when it has a black coating, worn electrodes, an oily film, or cracks. 3. Check the gap between the center and side electrodes (Figure 30). Bend the side electrode (Figure 30) if the gap is not correct. Installing the Spark Plugs 1.
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Page 31: Fuel System Maintenance
Fuel System Maintenance Servicing the Fuel Tank In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property. Figure 31 1. Fuel shut-off valve 2. Clamp •... -
Page 32: Drive System Maintenance
Drive System Maintenance Perform the following linkage adjustments when the machine needs maintenance. Perform steps Adjust the Speed Control Linkage through Adjusting the Tracking. If and adjustment is needed , do them in the order that they are listed. Adjusting the Speed Control Linkage 1. -
Page 33: Adjusting The Neutral Control Linkages
7. Check to make sure the safety switch is depressed and there is a 5/16 inch (8 mm) space between the actuating tab and the switch. (Figure 34). Mechanical or hydraulic jacks may fail to support machine and cause a serious injury. 8. -
Page 34: Adjusting The Hydro Control Linkages
pulled against the neutral spring (neutral position) (Figure 35). Mechanical or hydraulic jacks may fail to 12. Turn the adjusting bolt approximately 1/4 turn support machine and cause a serious injury. clockwise if the wheel is turning in reverse or turn the bolt approximately 1/4 turn counter-clockwise if •... - Page 35 Figure 38 3. spring 1. Speed control lever 2. Rear pivot spring Adjusting the Right Side Linkage Figure 36 1. Place the speed control lever in the neutral position. 12. After adjusting the left hydro control linkage, move 2. Place the right drive lever in the full forward position. the speed control lever forward and then back to the 3.
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Page 36: Adjusting The Control Rod
Figure 40 1. Control rod 5. Left handle shown 2. Clevis pin 6. Neutral lock Figure 39 3. Drive lever 7. Hairpin cotter pin 1. Hydro control linkage 3. Spring 4. Operator Presence 2. Quick track knob 4. 1 inch (26 mm) Control lever (OPC) 5. -
Page 37: Adjusting The Spring Anchor Links
3. Run the unit and observe the tracking on a level, smooth, hard surface such as concrete or asphalt. 4. If the unit tracks to one side or the other, turn the quick track knob. Turn the knob right to steer right and turn the knob left to steer left (Figure 42). -
Page 38: Cooling System Maintenance
Brake Maintenance Cooling System Maintenance Servicing the Brake Cleaning the Air Intake Screen Before each use, check the parking brake for proper operation. Before each use remove any build-up of grass, dirt Always set the parking brake when you stop the machine or other debris from the cylinder and cylinder head or leave it unattended. -
Page 39: Belt Maintenance
Belt Maintenance 4. Rotate the lower brake link yoke clockwise into the yoke to tighten the parking brake; rotate the brake link yoke counterclockwise out of the yoke out to Checking the Belts loosen the parking brake (Figure 46). Note: There should be approximately 1/4 inch Check all belts after every 50 operating hours or clearance between the tire and the flat bar when the monthly, whichever occurs first. -
Page 40: Adjusting The Mower Belt Tension
Adjusting the Mower Belt Tension Adjusting the Tension Adjust the mower belt tension as follows: • After the first 8 operating hours. • After the first 25 operating hours. • After every 50 operating hours. Check the belt tension after the first 8 operating hours and 25 operating hours thereafter. - Page 41 Note: The distance between the belt guide and the mower belt should be 3/4 inch (19 mm) when you engage the mower belt (Figure 50). Adjust the mower belt as necessary. The disengaged belt should not drag or fall off the pulley when the guides are properly adjusted.
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Page 42: Hydraulic System Maintenance
Hydraulic System 10. Remove the assist arm link from the assist arm and rotate the link to adjust the length. Maintenance 11. Install the assist arm link into the assist arm and secure it with the hairpin cotter pin (Figure 52). Servicing the Hydraulic 12. - Page 43 6. If there is no fluid, add fluid to the reservoir until it 4. Locate filter under engine base and place drain pan reaches the cold level of the baffle. under filter (Figure 55). 7. Run the machine at low idle for 15 minutes to allow 5.
- Page 44 or any of the hydraulic lines are disconnected. The 8. If either drive wheel still does not rotate, stop and critical area for purging air from the hydraulic system is repeat steps 4 and 5 on the respective pump. If between the oil reservoir and each charge pump located wheels rotate slowly, the system may prime after on the top of each variable displacement pump.
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Page 45: Mower Deck Maintenance
Mower Deck Maintenance Servicing the Cutting Blades To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, you may want to keep extra blades on hand. Figure 57 A worn or damaged blade can break, and a piece of the blade could be thrown into the 1. - Page 46 Replace the blades if you hit a solid object or if the blades are out of balance or bent. To ensure optimum performance and continued safety conformance of the machine, use genuine Toro replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards.
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Page 47: Adjusting The Blade Brake
Replacing the Grass Deflector Figure 62 An uncovered discharge opening could allow the lawn mower to throw objects in the 1. Blade 2. Balancer operator’s or bystander’s direction and result in serious injury or death. Also, contact with the Installing the Blades blade could occur. -
Page 48: Storage
Storage Important: The grass deflector must be free to rotate. Lift the deflector up to the full open position and ensure that it rotates freely without 1. Disengage the power take off (PTO), set the parking binding into the full down position. brake, and turn the ignition key to off. - Page 49 11. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 12. Store the machine in a clean, dry garage or storage area. Remove the key from the ignition switch and keep it in a memorable place. Cover the machine to protect it and keep it clean.
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Page 50: Troubleshooting
Troubleshooting Problem Possible Cause Corrective Action Engine will not start, starts hard, or fails 1. Fuel tank is empty. 1. Fill fuel tank with gasoline. to keep running. 2. Fuel shut off valve is closed. 2. Open the fuel shut off valve. 3. - Page 51 Problem Possible Cause Corrective Action Blades do not rotate. 1. Mower deck belt is worn or loose. 1. Check the belt tension. 2. Mower deck belt is broken. 2. Install new deck belt. 3. Mower deck belt is off pulley. 3.
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Page 52: Schematics
Schematics Electrical Schematic (Rev. -) Hydraulic Schematic (Rev. -) - Page 53 Notes:...
- Page 54 Notes:...
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- Page 56 Countries Other than the United States or Canada Customers who have purchased Toro products exported from the United States or Canada should contact their Toro Distributor (Dealer) to obtain guarantee policies for your country, province, or state. If for any reason you are dissatised with your Distributor’s service or have difculty obtaining guarantee information, contact the Toro importer.