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6 Remove screw securing debris shield,,
Note that the debris shield has a tab
which fits into a gap in the housing,,
Crankshaft Tab
Housing
hole _ Blade
shield
Hardened
washer
TraIIlngedge 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, altaching hardware
(boll, lock washer, hardened washer),
blade adapter and debris shield as one
assembly_
10.Remove drive belt from blade adapter
and debris shield; discard old bell
TO REPLACE DRIVE BELT
1o Place new drive belt in the belt retainer
of the debris shield,_ Be sure lo route
belt between belt keepers and through
slol as shown_
18" (45cm) HI-VAC MODELS:
Drive Debris
belt _. shield
etalners
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 ts in gap of housing°
4. Position blade on the blade adapter
aligning the two (2) holes in the blade
with the raised tugs on the adapter.
5 Be sure the trailing edge of blade (op-
posite sharp edge) ts up toward the
engine as shown,.
6 Install the blade boll with the lock
washer and hardened washer into
blade adapter and crankshaft,
7. Use block of wood between blade and
lawn mower l_ousing and tightenthe
blade bolt, turning clockwise.
o The recommended tighteningtorque is
35-40 IL lbso
IMPORTANT: Blade bolt is grade 8 heat
treated.
8. Return mower to upright position.
9, Instalt 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
iton the drive pulley) wilt cause the other
end of the belt to free itselffrom the debris
shield retainer and come into contact with
the pulley end of the blade adapter.
10oReattach drive cable and return spring
to the idlerarm assembly, then realtach
drive cable to anchor.
11.Realtach drive cover with screws prevl-
ously removed.
!2.Connect spark plug wire to spark plug
31
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