Advertisement
Quick Links
Fig. 1
The model 8125 is new. It features rear discharge
with a die cast aluminum housing and
is a gear
driven self-propelled mower. Fig. 1.
It is a zone start model with the flywheel brake
system. When the bail is released, both the engine
and blade will stop within the 3-second time limit.
Another feature
is an adjustable driven pulley
which controls ground speed. It is located under
the pulley cover.
SAFETY WARNING:
Disconnect the spark plug lead.
Remove two screws and lift cover off. Fig. 2.
.Fig. 2
With the engine operating at
3200 rpm, the ground
speed can be controlled to operate at 2.4, 2.6, 2.8,
3.0 or 3.2 mph.
MODEL 8125 SERVICING AND REPAIR
CHANGING GROUND SPEED.
Fig. 3
Loosen the n u t on the idler pulley bracket which
will release the tension on the belt. Remove the nut
and thick washer from the top of the driven pulley.
When a spacer or spacers are not used, they are
stored on top
of the pulley under the nut and
washer. Fig. 4.
Fig. 4
SERVICE BULLETIN REFERENCES
20-1
OCTOBER 1984
Advertisement
Related Manuals for Toro 8125
Summary of Contents for Toro 8125
- Page 1 MODEL 8125 SERVICING AND REPAIR Fig. 1 CHANGING GROUND SPEED. The model 8125 is new. It features rear discharge with a die cast aluminum housing and is a gear driven self-propelled mower. Fig. 1. It is a zone start model with the flywheel brake system.
- Page 2 With no spacers between the pulley halves, the After the ground speed has been selected, assem- ground speed is 2.4 mph at 3200 rpm. Add one ble the top half of the pulley onto the shaft. Fig. spacer between the pulley halves, the speed in- creases to 2.6 mph.
-
Page 3: Safety Warning
Move the idler bracket to apply tension on belt and To replace the belt, remove the pulley cover. tighten idler bracket nut. Fig. 10-A. Belt should Loosen the nut on the idler pulley bracket which deflect approximately 3/8” with firm finger will release tension on the belt. - Page 4 Remove the four bolts that retain the engine to the Install a new exhaust gasket. Fig. muffler plate. Fig. 14. NOTE: Hold the engine while removing these bolts. Don’t let it drop. Fig. 16 Place the new belt over the drive pulley and set engine back onto the muffler plate.
- Page 5 Block one side of mower up. Fig. 18. Clean the Clean the threads of the three muffler screws with threads of the engine mounting bolts with LOC Quic LOC Quic Primer, Part #385884. Apply OMC Ultra Primer, Part #384884. Apply OMC Ultra Lock, Part Lock, Part #388517 to the threads.
- Page 6 Tighten all three screws to 142-170 in. Ibs., 12-14 Assemble the belt on the drive pulley of the ft. Ibs. Fig. 22. cranksha’ft. With the idler pulley bracket loose, the belt should assemble over the driven pulley very easily. Fig. 24. Fig.
- Page 7 Fig. Fig. BULLETIN REFERENCES 20.7 OCTOBER 1984...
- Page 8 To prevent dirt from entering inside of the wheel, The transmission assembly is filled with “A” grease at the factory and should not require addi- apply Lawn-Boy “A” grease in the groove of the tional lubrication. However, if seepage of the lubri- wheel cover.
- Page 9 FRONT WHEEL MAINTENANCE Remove the driven pulley assembly from transmission. Fig. 36. It is not necessary to lubricate the front wheel bolts. For engine, exhaust and blade servicing refer their respective sections in the Manual. TRANSMISSION SERVICING AND REPAIR WARNING: Disconnect the spark plug lead.
- Page 10 An “0” ring is preassembled on the hub of the Remove the right rear wheel bolt with a 314” socket. clutch arm before final assembly. When removing the arm from the transmission, the “0” ring slides off into the hole and around the square shaft of the shift fork.
- Page 11 The pinion gear is driven with a spring loaded key Behind the pinion gear is another retaining ring. located in the shaft. Before removing the gear, turn Remove it and slide the wheel cover off. Remove it in both directions. It turns forward freely with a the left wheel, pinion gear and wheel cover.
- Page 12 Push the bronze bearing and retainers out of the Carefully pull the transmission and shaft assembly bracket. Check the bearing surfaces for damage out of the ‘left hand bracket. Fig. 48. and wear. Replace if necessary. Also note the six lubricating holes in the bracket hub.
- Page 13 Remo’ve the input (worm) shaft and bearing assembly. Fig. 50 1. Packing 2. Input Shaft & Bearing 3. Worm Wheel Ring Retainer “0” Shift Collar 6. Shift Fork Driver Assembly 8. Bearing & Seal Assembly Fig. Fig. 52 1. Bearing & Seal Assembly 10.
- Page 14 Wash and clean all parts. Inspect for wear or Correct sequence in reassembly of the driver and damage. Replace any worn or damaged parts. driven plates into the housing is very important. If reassembled incorrectly, the transmission will not function properly. There are six driver plates (Ref. 2) and seven driven plates (Ref.
- Page 15 Holding the clutch assembly in your fingers, slide Assemble large spacer washer into recess of worm it onto shaft. Assemble pin in hole and slide wheel. Fig. 59. assembly over the pin. Fig. Assemble worm wheel onto the spline. Fig. 58. Fig.
- Page 17 Check to be sure the larger spacer washer is in the Fill the lower gearcase with Lawn-Boy type “A” recess of the worm wheel. Push both bearings up grea’se until it is level with gasket surface. Fig. 68. against each end of transmission assembly.
- Page 18 The correct procedure in tightening the four short Assemble the four short bolts into the housings bolts and nuts is to use a criss-cross pattern. The with the heads on top. Assemble the long bolt from required torque on each nut is in.
- Page 19 Align the transmission with the mounting hole in Before installing the wheel cover on the shaft, the mower housing. Insert the shoulder bolt apply Lawn-Boy type “A” grease in the groove. This through the mounting hole, install the washer over grease stops dirt and debris from entering the gear the threads, and assemble to the transmission.
- Page 20 Place the pinion gear drive key in slot. Fig. 79. Apply a film of Lawn-Boy oil to the wheel bolts. Fig. 81-A. Assemble the wheel and tighten the bolt. Also apply a generous amount of Lawn-Boy “A” grease in the planetary gear of the wheel. Fig. 81-B. Fig.
- Page 21 Reassemble handle back on the mower. Install the Attach both springs to the clutch arm and cable hairpin clips. Fig. 83. mounting bracket. Fig. 86. Fig. 83 Fig. 86 Place the “0” ring retainer cup on the square shift Slide the clutch arm onto the shift fork shaft and fork shaft.
- Page 22 Assemble the clutch cable bracket on the long bolt Pulling the cable down, holding it against the up- in the transmission. Make sure the edge of bracket per part of the handle, place a tie wrap just above is seated against transmission housing. Assemble the joint of the lower handle.
- Page 23 To reassemble pulley, washer and speed control spacers, refer to Figures 4 through 10-B Assemble the belt cover. Fig. 92. Start, run and test the mower for engine speed, carburetor ad- justments, transmission operation, and blade stop- ping time. Engine speed should be 3100-3300 rpm at high speed and 2400-2600 rpm at low speed.