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Craftsman 917.389260 Owner's Manual page 12

4.0 horsepower 20" rear discharge rotary lawn mower

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IMPORTANT:
Blade bolt is grade 8 heat
treated.
TO SHARPEN
BLADE
NOTE:
We do not recommend
sharpen-
ing 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.
Crank
Blade
shaft
ada
Key
Btade
bolt
\
shaft
Lock
Blade
washer Hardened edge
adapter
washer
GRASS CATCHER
• The grass catchermay be hosedwith
water, but must be dry when used.
• Check your grass catcheroftenfor
damage or deterioration. Through normal
use itwillwear. If catcher needs replacing,
replace only with a manufacturerapproved
replacementcatcher. Give the lawn
mower model number when ordering.
ENGINE
LUBRICATION
Use only high quality detergent oil rated
with API service classification SF, SG or
SH. Select the oil's SAE viscosity grade
according to your expected operating
temperature.
SAE VISCOSITY GRADES
-20"
-I0"
O"
16"
20"
_'_PERATURE
RANGE ANTIOPA'n_
BEFORE NEXT OF. CHANGE
NOTE: Although multi-viscosityoils
(5W30, 10W30 etc.) improve starting in
cold weather, these multi-viscosityoils
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. Tighten oil plug
securely each time you check the oil
level.
TO CHANGE ENGINE OIL
• Disconnect spark plugwire 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 plug.
• After oil has drained completely,
replace oil drain plug and tighten
securely.
• Refill engine with oil. Pour slowly. Do
not over fill.
• Fill to top of slot inside of filler hole.
• Reconnect spark plug wire to spark
plug.
Drainplug
12

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