Sears 917.257643 - Manual (Page 18)

CUSTOMER RESPONSIBILITIES
AIR FILTER (See Fig. 17)
Your engine will not run properly using a dirty air filter.
Clean the foam pre-cleaner after every 25 hours of opera­
tion or every season,. Service paper cartridge every po
hours of operation or every season, whichever occurs first
Service air cleaner more often under dusty conditions.
• Remove knob(s) and cover.
TO SERVICE PRE-CLEANER
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 oil.
If very dirty or damaged, replace pre-cleaner.
Reinstall pre-cleaner over cartridge.
Reinstall cover and secure with knob(s).
TO SERVICE CARTRIDGE
Remove cartridge nut.
Carefully remove cartridge to prevent debris from en­
tering carburetor. Clean base carefully to prevent
debris from entering carburetor.
• Cleancartridgebytappinggentlyonflatsurface. Ifvery
dirty or damaged, replace cartrid ge.
• Reinstall cartridge, nut, precleaner, 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 P R E S S U R I Z E D A I R T O C L E A N O R D R Y
CARTRIDGE.
CLEAN AIR SCREEN (See Fig. 18)
Air screen must be kept free of dirt and chaff to prevent
engine damage from overheating. Ciean with a wire brush
or compressed atr to remove dirt and stubborn dried gum
fibers.
ENGINE COOLING FINS (See Fig. 18)
Remove any dust, dirt or oil from engine cooling fins to
prevent engine damage from overheating.
• Remove screws from blower housing and lift housing
and dipstick tube assembly off engine. »
• Cover oil fill opening to prevent entry of dirt. ,
<* Use compressed air or stiff bristle brush to thoroughly
clean engine cooling fins.
« To reassemble, reverse above procedure.
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