31
Debris
shield
Drive
belt
Belt
retainers
SERVICE AND ADJUSTMENTS
Debris
shield
Belt retainer
Belt
keepers
Drive
belt
Slot
Tab
TO REPLACE DRIVE BELT
1. Place new drive belt in the belt retainer
of the debris shield. Be sure to route
belt between belt keepers and through
slot as shown.
18" (45cm) HI-VAC MODELS:
21" (53cm) HI-VAC MODELS:
2. Route the other end of the new drive
belt through hole in housing.
3. Reattach debris shield to housing with
screw previously removed. Be sure
tab of debris shield is in gap of hous-
ing.
4. Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised lugs on the adapter.
5. Be sure the trailing edge of blade (op-
posite sharp edge) is up toward the
engine as shown.
6. Install the blade bolt with the lock
washer and hardened washer into
blade adapter and crankshaft.
7. Use block of wood between blade and
lawn mower housing and tighten the
blade bolt, turning clockwise.
• The recommended tightening torque is
35–40 ft. lbs.
IMPORTANT
: Blade bolt is grade 8 heat
treated.
8. Return mower to upright position.
9. Install new drive belt into idler arm as-
sembly, then around the drive pulley.
Be sure belt is inside of belt keepers.
NOTE:
Pulling on the drive belt (to install
it on the drive pulley) will cause the other
end of the belt to free itself from the debris
shield retainer and come into contact with
the pulley end of the blade adapter.
10. Reattach drive cable and return spring
to the idler arm assembly, then reat-
tach drive cable to anchor.
11. Reattach drive cover with screws previ-
ously removed.
12. Connect spark plug wire to spark plug.
22PLUS REAR WHEEL DRIVE MODELS:
1. Remove screws securing rear baffle.
2. Turn lawn mower on its side with air
filter and car bu re tor down.
NOTE
: Before tipping lawn mower to
remove drive belt, empty fuel tank by run-
ning engine until fuel tank is empty.
3. Remove rear baffle from mower.
Blade
bolt
Hardened washer
Lockwasher
Blade
adapter
Blade
Belt
retainer
Gearcase
belt keeper
Debris
shield
Rear
baffle
Gearcase
pulley