Service Manual

10-2
WPM Drive Systems Manual
SELF-PROPELBELTREPLACEMENT
and may not disengage properly. It may be necessary
to remove the blade to replace the belt. Do not force the
new belt between the blade and mower housing. A nick
or cut in the new belt can cause premature failure.
Follow the procedure in reverse order to reassemble.
22”RearWheelDrive–SingleSpeed
BevelGearTransmission
Toro and Lawn-Boy steel deck models
In order to replace the self-propel drive belt the trans-
mission must be removed from the chassis. This is
necessary to access the pulley and belt guide on top
of the transmission. See “Single Speed Bevel Gear
Transmission, Rear Wheel Drive Models, Transmission
Removal and Belt Replacement”, on page 4-10.
If necessary, drain the fuel and oil to prevent spillage.
Tip the mower on its side, air lter side up. DO NOT
bend the belt guides or force the belt between the
pulley and belt guide. Loosen or remove the mounting
screws to pivot the belt guides out of the way. If the belt
guides are bent or out of place, the belt may have a
tendency to jump and may not disengage properly. It
may be necessary to remove the blade to replace the
belt. Do not force the new belt between the blade and
mower housing. A nick or cut in the new belt can cause
premature failure.
Follow the procedure in reverse order to reassemble.
21”Lawn-BoyInsightMowers
The Zone Start models use a basic self-propel system.
See “Transmission Remove and Replace”, on page
4-19, which also explains the belt replacement process.
There are several different procedures for replacing the
self-propel belt. Mowers with a blade brake clutch (BBC)
mechanism are the most complex as parts of that will
need to be removed to access the self-propel belt.
Toro21”FrontWheelDrive–Worm
DriveTransmission
See “Worm Drive Transmission” on page 2-1.
These mowers usually have a model number that starts
with 16xxx.
Remove the belt cover, push the top of the transmission
to the rear to create slack in the belt, and remove the
belt. Push the belt towards the engine. If necessary,
drain the fuel and oil to prevent spillage. Tip the mower
on its side, air lter side up. Slip the belt off the crank-
shaft pulley. In some cases, there might not be enough
clearance blade mower housing. It might be necessary
to remove the blade to remove the belt.
Follow the procedure in reverse order to reassemble.
21”Steel&CastDeck–SingleSpeed
Spur/BevelGearTransmission
If necessary, drain the fuel and oil to prevent spillage.
Tip the mower on its side, air lter side up. Remove the
belt cover. Loosen or remove the belt guides so the belt
can be replaced without forcing it off. See the “Single
Speed Spur/Bevel Gear Transmission” section for a
typical transmission and drive layout, on page 3-1.
Follow the procedure in reverse order to reassemble.
22”FrontWheelDrive–SingleSpeed
BevelGearTransmission
See “Single Speed Bevel Gear Transmission” on page
4-1.
These mowers usually have a model number that starts
with 200XX.
If necessary, drain the fuel and oil to prevent spillage.
Tip the mower on its side, air lter side up. Remove
the two belt cover mounting screws. DO NOT bend the
belt guides or force the belt between the pulley and belt
guide. Loosen or remove the mounting screws to pivot
the belt guides out of the way. If the belt guides are bent
or out of place, the belt may have a tendency to jump