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LAWN MOWER
Always observe safety rules when performing main te nance.
TIRES
•
Keep tires free of gasoline, oil, or insect control chem i-
cals which can harm rubber.
•
Avoid stumps, stones, deep ruts, sharp objects and
other hazards that may cause tire damage.
BLADE CARE
For best results, mower blade must be kept sharp. Re place
bent or dam aged blades.
CAUTION:
blade approved by the manufacturer of
your mower. Using a blade not approved
by the manufacturer of your mower is
hazardous, could damage your mower
and void your warranty.
TO REMOVE BLADE (See Fig. 12)
1. Disconnect spark plug wire from spark plug and place
wire where it cannot come in contact with plug.
2. Turn lawn mower on its side. Make sure air filter and
carburetor are up.
3. 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.
4. Remove blade bolt by turning counter-clockwise.
5. Remove blade and attaching hardware (bolt, lock
wash er and hardened wash er).
NOTE: Remove the blade adapter and check the key inside
hub of blade adapter. The key must be in good condition
to work properly. Replace adapter if damaged.
TO REPLACE BLADE (See Fig. 12)
1. Position the blade adapter on the engine crank shaft.
Be sure key in adapter and crankshaft keyway are
aligned.
2. Position blade on the blade adapter aligning the two (2)
holes in the blade with the raised lugs on the adapter.
3. Be sure the trailing edge of blade (opposite sharp
edge) is up toward the engine.
4. Install the blade bolt with the lock washer and hardened
washer into blade adapter and crankshaft.
5. 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. lbs.
(47–54 Nm).
IMPORTANT: BLADE BOLT IS HEAT TREATED. IF BOLT NEEDS
REPLACING, REPLACE ONLY WITH APPROVED BOLT.
TO SHARPEN BLADE
NOTE: We do not recommend sharp en ing blade - but if
you do, be sure the blade is balanced. An un bal anced
blade will cause eventual damage to lawn mower or engine.
MAINTENANCE
Use only a replacement
•
The blade can be sharp ened with a file or on a grinding
wheel. Do not attempt to sharpen while on the mower.
•
To check blade balance, drive a nail into a beam or
wall. Leave about one inch of the straight nail ex posed.
Place center hole of blade over the head of the nail.
If blade is balanced, it should remain in a horizontal
position. If either end of the blade moves downward,
sharpen the heavy end until the blade is balanced.
BLADE ADAPTER
BLADE
LOCK
WASHER
BLADE
BOLT
HARDENED
WASHER
GRASS CATCHER
•
The grass catcher may be hosed with water, but must
be dry when used.
•
Check your grass catcher often for damage or de te-
ri o ra tion. Through normal use it will wear. If catcher
needs replacing, replace only with ap proved replace-
ment catcher shown in the Repair Parts section of this
manual. Give the mower model number when ordering.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SJ–SN. Select the oil's SAE viscosity grade
according to your expected operating temperature.
NOTE: Although multi-viscosity oils (5W30, 10W30 etc.)
improve starting in cold weather, these multi-viscosity oils
will result in increased oil consumption when used above
32°F. Check your engine oil level more frequently to avoid
possible engine damage from running low on oil.
* NOTE: An oil change is not required but if you desire to
change the oil follow the procedure below.
11
KEY
CRANKSHAFT
TRAILING EDGE
CRANKSHAFT
FIG. 12
KEY WAY
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