Service And Adjustments - Husqvarna 55R21HVL Owner's Manual

SERVICE AND ADJUSTMENTS
CAUTION: TO AVOID SERIOUS INJURY, BEFORE PERFORMING ANY SERVICE OR ADJUSTMENTS:
1. Release control bar and stop engine.
2. Make sure the blade and all moving parts have completely stopped.
3. Disconnect spark plug wire from spark plug and place wire where it cannot come in contact
with plug.
LAWN MOWER
TO ADJUST CUTTING HEIGHT
See "TO ADJUST CUTTING HEIGHT" in the Operation
section of this manual.
REAR DEFLECTOR
The rear deflector, attached between the rear wheels of
your mower, is provided to minimize the possibility that
objects will be thrown out of the rear of the mower into
the operator's mowing position. If the deflector becomes
damaged, it should be replaced.
TO REMOVE DRIVE BELT (See Figs. 18-20)
1. Disconnect spark plug wire from spark plug and place
wire where it cannot come in contact with plug.
2. Remove screws retaining drive cover and remove drive
cover from lawn mower housing (See Fig. 18).
DRIVE
COVER
LAWN
MOWER
HOUSING
4,
5.
6.
Pivot idler arm assembly to slacken drive belt, then
remove drive belt from drive pulley, belt keepers and
idler arm.
Turn lawn mower on its side. Make sure air filter and
carburetor are up.
Remove screw securing debris shield. Note that the
debris shield has a tab which fits into a gap in the
housing (See Fig. 20).
HOUSING CRANKSHAFT
HOLE TAB
BLADE
ADAPTER
HARDENED
WASHER
LOCK-
SCREW
TRAILING
EDGE
BLADE
BOLT
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.
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.
FIG. 18
3. Remove drive cable from anchor, then detach spring
from idler arm assembly (See Fig. 19).
IDLER ARM ASSEMBLY DRIVE CABLE ANCHOR
/
DRIVE BELT
DRIVE BELT PIVOT \ HOUSING
PULLEY KEEPER \ HOLE
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 as shown (See Fig. 21).
TAB
BELT
DRIVE
\
BELT
SLOT RETAINER
FIG. 19 14 FIG. 21