Download Print this page

Craftsman 917.388260 Owner's Manual page 10

4.0 horsepower 20" rear discharge rotary lawn mower

Advertisement

IMPORTANT:
Blade bolt is grade 8 heat
treated.
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 inch of
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
Cranksha_
adapter
keyway
Key
Blade
Blade
bolt
Lock-
washer Hardened
Blade
washer
Trailing
adapter
edge
GRASS CATCHER
Crank-
shaft
• The grass catcher may be hosed with
water, but must be dry when used.
• Check your grass catcher often for
damage or deterioration.
Through
normal use it will wear.
If catcher needs
replacing,
replace only with a manufac-
turer approved
replacement
catcher.
Give the lawn mower model number
when ordering.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with
,',__ _e__4cec_assification SK SG or SH.
:'_ _ct "P,_oii'_ SAE v!scosit_] _rade accordin_
',
:
21.r.,!C[£:
O_;.e!::_!:,_'Ctg"]i::_.'i'&_L:r_.
oF
.20,
O.
_,
a_Z, 40"
_,
el_
tOO'tO0_ I
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.
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. l]ghten oil plug securely each
time you check the oil level.
TO CHANGE ENGINE OIL
• Disconnect
spark plug wire from spark
plug and place wire where it cannot
come in contact with spark plug.
• Be sure lawn mower is on level surface.
• Oil will drain more freely when warm.
• Catch oil in a suitable container.
• Remove bottom oil drain p_ug.
• After oil has drained completely,
replace
oil drain plug and tighten securely.
• Refill engine with oil. Pour slowly.
Do
not over fill.
L
• Fill to top of slot inside of filler hole.
• Reconnect
spark plug wire to spark
plug.
Drain plug
AIR FILTER
Your engine will not run properly and may
be damaged
by using a dirty air filter.
Replace the air filter every year, more
often if you mow in very dusty, dirty
conditions.
Do not wash air filter.
TO CHANGE
AIR FILTER
:qemove the air filter by turning counter-
_!eckwis,_ to the stop and ou!! -3way from
!iJ

Advertisement

loading