Husqvarna 917.374780 Owner's Manual page 15

SERVICE AND ADJUSTMENTS
TO REMOVE DRIVE BELT
(See Figs.
18 thru 21)
1. Disconnect spark plug wire from spark plug and place
wire where it cannot come in contact with spark plug.
2. Remove screws retaining drive cover and remove drive
cover from lawn mower housing (See Fig. 18).
SCREWS
LAWN
MOWER
HOUSING CRANKSHAFT
HOLE TAB
BLADE
ADAPTER
DEBRIS
HARDENED
WASHER
LOCK-
TRAILING
SCREW EDGE
BOLT
FIG. 20
9. Remove blade, attaching hardware (bolt, lock washer,
hardened washer), blade adapter and debris shield as
one assembly.
10. Remove drive belt from btade adapter and debris shietd;
discard old belt.
FIG. 18
3. Remove drive cable from anchor, then detach the drive
cable spring from idler arm assembly (See Fig. 19).
IDLER ARM ASSEMBLY DRIVE CABLE ANCHOR
/ DRIVE BELT
TO REPLACE DRIVE BELT (See Figs. 18-21)
1. Place new drive belt in the belt retainer of the debris
shield. Be sure to route belt between belt keepers and
through slot (See Fig. 21 ).
\
DRIVE BELT PIVOT ' \ HOUSING
PULLEY KEEPER \ HOLE
FIG. 19
4. Pivot idler arm assembly to slacken drive belt, then
remove drive belt from drive pulley, belt keepers and
idler arm.
5. Turn lawn mower on its side. Make sure air filter and
carburetor are up.
6. Remove screw securing debris shield. Note that the
debris shield has a tab which fits into a gap in the
housing (See Fig. 20).
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.
BELT RETAINER_
BELT
KEEPER, _
DRIVE
BELT
TAB
DEBRIS
SLOT SHIELD
FIG. 21
2. Route the other end of the new drive belt through hole
in housing.
3. Reattach debris shield to housing with screw previ-
ously 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 surethe trailing edge of blade (opposite sharp edge)
is up toward the engine (See Fig. 20).
6. Install the blade bolt with the lock washer and hardened
washer into blade adapter and crankshaft.
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