Craftsman 3One 917.255470 Owner's Manual page 18

Your engine will not run properly using a dirty air filter.
Clean the foam pre-cleanar element after every 25 hours of
operation or every season. Service paperca#ridge every
100 hours of operation or every season, whichever occurs
first.
Service air cleaner more often under dusty conditions.
o Remove knob(s) and cove_:
TO SERVICE PRE-CLEANER -
o Slide foam pre-cleaner off cartridge.,
. Wash it in liquid detergent and water.
• Squeeze it dry in a clean cloth.
. Saturate it in engine oil. Wrap it in clean, absorbent
cloth and squeeze to remove excess oi!.
• Reinstall pro-cleaner over cartridge.
° Reinstall cover and secure with knob(s).
TO SERVICE CARTRiDGE-
. Remove cartridge nut°
o Remove cartridge and clean by tapping gently on flat
surface.
° If very dirty, replace or wash in a nonsudsing detergent
andwarm watersolution. Rinsethoroughlywithwater
from inside out until water runs clear. Let cartridge dry
thoroughly before using,
= Reinstall cartridge, nut, precteaner, cover and secure
with knob(s).
IMPORTANT: PETROLEUM SOLVENTS, SUCH AS
KEROSENE, ARE NOT TO BE USED TO CLEAN THE
CARTRIDGE. THEY MAY CAUSE DETERIORATION OF
THE CARTRIDGE. DO NOT OIL CARTRIDGE. DO NOT
USE PRESSURIZED AIR TO CLEAN OR DRY
CARTRIDGE.
COVER KNOB ..._/.-4_
COVER /"_¢_,..._ ., CARTRIDGE NUT
FIG. 17
P,irt Ot.,,Mc;r-=M IOUr_ r'l,_. IO)
The engine air screen must be kept free of dirt and chaff to
prevent engine damage from overheating. Clean with a
wire brush or compressed air to remove dirt and stubborn
dried gum fibers.
ENGINE COOLING FINS (See Fig. 18)
Remove any dust, dirt or oiEfrom engine cooling fins to
prevent engine damage from overheating.
, Remove oil fill dipslick and cover opening to prevent
entry of dirt.
o Remove screws from blower housfng and tilt housing
off engine.
o Remove the screws securing the starter housing and
lilt housing off engine.
o Use compressed air or stiff bristle brush to thoroughly
clean engfne cooling tins.
° To reassemble, reverse above procedure.
SCREWS
BLOWER HOUSING
SCREWS
SCREWS
AIR SCREEN
STARTER
HOUSING
OIL RLL
DIPSTICK
ENGINECOOLINGRNS
FIG. 18
PLUG
18