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MAINTENANCE
LAWN MOWER
Always observe safety rules when performing any main-
tenance.
TIRES
•
Keep tires free of gasoline, oil, or insect control chem-
icals which can harm rubber.
•
Avoid stumps, stones, deep rut& sharp objects and
other hazards that may cause tire damage.
DRIVE WHEELS
Check rear drive wheels each time before you mow to be
sure they move freely.
The wheels not turning freely means trash, grass cuttings,
etc. are in the drive wheel area and must be cleaned to
free drive wheels.
If necessary to clean the drive wheels, be sure to clean
both rear wheels.
BLADE CARE
For best results, mower blade must be kept sharp. Replace
bent or damaged blades.
TO REMOVE BLADE (See Fig. 16)
1.
Disconnect spark plug wire from spark plug and place
wire where it cannot come in contact with spark 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 housing
to prevent blade from turning when removing 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 washer
and hardened washer).
TO REPLACE BLADE (See Fig. 16)
1.
Position blade on the blade adapter aligning the two
(2) holes in the blade with the raised lugs on the
adapter.
2.
Be sure thetrailing edge of blade (opposite sharp edge)
is up toward the engine.
3.
Install the blade bolt with the lock washer and hardened
washer into blade adapter and crankshaft.
4.
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.
IMPORTANT:BLADEBOLTISHEATTREATED. I F BOLTNEEDS
REPLACING,REPLACEONLYWITHAPPROVEDBOLTSHOWN
IN THE REPAIRPARTSSECTION OF THIS MANUAL.
TO SHARPEN BLADE
NOTE: We do not recommend sharpening blade - but if
you do, be sure the blade is balanced.
Care should be taken to keep the blade balanced. An
unbalanced blade will cause eventual damage to lawn
mower or engine.
•
The blade can be sharpened 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 inchof the straight nail exposed.
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
TRAILING
EDGE
WASHER
LOCK
WASHER
BLADE BOLT
FIG. 16
GRASS CATCHER
The grass catcher may be hosed with water, but must
be dry when used.
Check your grass catcher often for damage or dete-
rioration. Through normal use it will wear. If catcher
needs replacing, replace only with approved replace-
ment catcher shown in the Repair Parts section of this
manual. Give the lawn mower model number when
ordering.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SF-SJ. Select the oil's SAE viscosity grade
according to your expected operating temperature.
SAE VISCOSITY GRADES
I,
,I,
°F
-20
0
30
:_
40
60
80
100
"C 40
"20
-10
0
10
,20
30
40
TEMPERATURE
RANGE ANTICIPA'I_D
BEFORE NEXT OIL CHANGE
NOTE: Multi-viscosity oils (5W30, 10W30 etc.) improve
starting in cold weather, and you should check your engine
oil level frequently to avoid possible engine damage from
running low on oil.
Change the oil after every 25 hours of operation or at least
once a year if the lawn mower is not used for 25 hours in
one year.
Check the crankcase oil level before starting the engine
and after each five (5) hours of continuous use. Tighten oil
plug securely each time you check the oil level.
13
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