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• Turn lawn mower on its side. See engine
manual for proper direction of turning
over the engine.
• Use a wood block between blade and
mower hous ing to prevent blade from
turning when re mov ing blade bolt.
NOTE: Protect your hands with gloves
and/or wrap blade with heavy cloth.
• Remove blade bolt.
• Remove blade, attaching hardware (bolt,
lock wash er, hardened wash er), blade
adapter and debris shield. Note that the
debris shield has a tab which fi ts into the
housing hole.
• Remove drive belt from engine pulley;
discard old belt.
Trailing edge
Crankshaft
Debris shield
Blade
adapter
Hardened
washer
Lock-washer
Blade
bolt
Tab
Housing hole
Drive cable anchorDrive pulley
Housing holes
Drive belt
Idler arm
assembly
Belt
keepers
Hex nut
Return
spring
REAR WHEEL DRIVE MODELS:
• Disconnect spark plug wire from spark
plug and place wire where it cannot
come in contact with plug.
• Remove screws retaining drive cover
(not shown); and remove drive cover
from lawn mower housing.
• Remove drive cable from anchor, then
detach it and return spring (if equipped)
from idler arm assembly.
• Remove idler arm assembly from hous-
ing by removing hex nut; then remove
drive belt from drive pulley, belt keepers
and idler arm assembly.
• Install new belt by reversing above
steps.
NOTE: Always use factory approved belt
to assure fi t and long life.
• The recommended tightening torque is
35-40 ft. lbs.
IMPORTANT: Blade bolt is grade 8 heat
treated.
ENGINE
CARBURETOR
The carburetor has been preset at the fac-
tory and ad just ment should not be neces-
sary. However, minor ad just ment may be
required to compensate for differences in
fuel, temperature, altitude or load.
• The air fi lter must be assembled to the
car bu re tor when running engine.
• Best carburetor adjustment is obtained
when fuel tank is 1/4 full.
• In order for the engine to run, the opera-
tor presence control bar must be held
in the operating position. There fore,
and assistant will be required to hold
the control bar in the operating position
when making fi nal adjustment to the
car bu re tor.
See the ADJUSTMENT section of your
engine manual for further instructions.
ENGINE SPEED
The engine speed has been factory set.
Do not attempt to increase engine speed
as it may result in personal injury. If you
believe the engine is running too fast
or too slow, take your lawn mower to an
authorized engine service center for repair
and adjustment.
THROTTLE CONTROL
If it becomes necessary to adjust or re-
place the throttle control, see the ADJUST-
MENT section of your engine man ual.