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Craftsman 917.388383 Owner's Manual page 12

6.0 horsepower 21" multi-cut rotary lawn mower

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TO
SHARPEN BLADE
NOTE: We do not recommendsharpen-
ingblade - but if you do, be sure the blade
is balanced.
Care shouldbe taken to keep the blade
balanced. An unbalancedblade will
cause eventual damage to lawn mower or
engine.
• The blade can be sharpenedwith a file
or on a grindingwheel. Do not attempt
to sharpen while on the mower.
• To check blade balance, drive a nail
intoa beam or wall. Leave aboutone
inchof the straightnail exposed. Place
center hole of blade over the head of
the nail. If blade is balanced,it should
remainin a horizontalposition. If either
end of the blade movesdownward,
sharpen the heavy end untilthe blade
is balanced.
Crank shaft
Blade
keyway
Bolt
Crank
Lockwasher Hardened
Blade shaft
washer
Trailing adapter
edge
GRASS CATCHER
• The gra_ catcher may 10e hosed with
water, but must be dry when ussd.
• Check your grass ca_her often fordamage
or deterioration.Through normal use it will
wear. If catcher needs replacing, replace
only with a manufacturer 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, SH or
SG. Select the oil's SAE viscosity grade
according to your expected operating
.t
NOTE:
Although multi-viscosity oils
(5W30, lOW30 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. Tighten oil plug
securely each time you check the oil level.
TO CHANGE
ENGINE
OIL
NOTE: Beforetippinglawn mowerto
drain oil, drain fuel tank by running
engine untilfuel tank is empty.
• Disconnectspark plug wire from spark
plug and place wire where it cannot
come in contactwith spark plug.
• Remove engine oil cap; lay aside on a
clean surface.
• Tip lawn mower on its side and drain oil
into a suitablecontainer.Rock lawn
mower back and forth to remove any oil
trapped inside of engine.
• Wipe off any spilledoil on lawn mower
and on side of engine.
• Fill enginewith oil. Fill only to the
=FULL"line on the dipstick.DO NOT
OVER FILL.
• Replace engine oil cap.
• Reconnectspark plug wire to spark
plug.
AIR FILTER
Yourengine will not run properlyand may
be damagedby using a dirtyair filter.
Replacethe air filterevery year, more
often if you mow in very dusty,dirty
conditions.Do not wash air filter.
TO CLEAN AIR FILTER
• Loosen screw and tilt cover to remove.
• Carefully remove cartridge.
• Clean by gently tapping on a flat
surface. If very dirty, replace cartridge.
12

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