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6. Removescrewsecuringdebrisshield.
Notethatthedebrisshieldhasatab
whichfitsintoagapinthehousing.
CrankshaftTab"-.'-'_'_'._
Housing ',_
hoJe Blade
Hardened
washer
Trailing edge Lock-washer
7. Use a wood block between blade and
mower housing to prevent blade from
turning when removing blade bolt.
NOTE: Protect your hands with gloves
and/or wrap blade with heavy cloth.
8. Remove blade bolt.
9. Remove blade, attaching hardware
(bolt, lock washer, hardened washer),
blade adapter and debris shield as one
assembly.
10, Remove drive belt from blade adapter
and debris shield; discard old belt.
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:
Drive Debris
belt shield
Belt
_tainers
21" (53cm) HI-VAC MODELS:
Beit retainer, Tab
Belt
Drive
belt
\
Debris
Slot shield
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 housing.
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, Ibs.
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.
t0. Reattach drive cable and return spring
to the idler arm assembly, then reattach
drive cable to anchor.
11. Reattach drive cover with screws previ-
ously removed.
12.Connect spark plug wire to spark plug,
31
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