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Craftsman 917.387203 Owner's Manual page 10

3.5 horsepower 20" side discharge rotary lawn mower

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• The recommended
tightening torque is
35-40 ft. Ibs.
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
Crankshaft
adapter'P'-_
keyway
Key
Crank-
shaft
bolt
Lock
Blade
washer
edge
adapter
Hardened
washer
GRASS
CATCHER
(If purchased
as an accesssory)
• 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
API service classification SF, SG or SH.
Select the oirs SAE viscosity grade according
to your expected operating temperature.
SAE VISGOS_TY
GRADES
-26*
._o-
6-
lO-
20-
30-
TEMPERATURE
RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
NOTE: Althoughmulti-viscosity o ils(5W30,
10W30 etc.) improvestarlingin coldweather,
these multi-viscosity o ils willresultin increased
oilconsumption when usedabove 32°F.
Check your engineoillevelmorefrequently to
avoidpossibleenginedamage from running
lowon oil.
Change ff=eoil after every 25 hours of
operatlen or at least once a year ifthe 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 13ghten 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 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.
J
Drain plug
NR RLTER
Your engine will not run property and may be
damaged by using a dirty air filter. Clean the
element after every 25 hours of operation,
more often if mower is used in very dusty, dirty
conditions.
TO CLEAN AIR FILTER ELEMENT
• Remove the air filter by tuming counter-
clockwise to the stop and pull away from
collar.
10

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