Craftsman 917.271633 Owner's Manual page 20

Closed Oil Drain Valve
and _
Locked DrainTube
position
Ca
CLEAN AIR SCREEN
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
stubbom dried gum fibers.
ENGINE COOLING FINS
Remove any dust, dirt or oil from engine
cooling fins to prevent engine damage
from overheating.
1. Remove oil fill cap/dipstick.
2. Remove hex bolts from blower
housing and lift housing off engine.
3. Cover oil fill opening to prevent entry
of dirt.
4. Use compressed air or stiff bristle
brush to thoroughly clean engine
cooling fins.
5. To reassemble, reverse above
procedure.
BlowerHousing
Hox
o1,: :2
Dipstick Air c creen
EngineCooling Fins _J"_ Plug
AIR FILTER
Yourengine will not run properly using a
dirty air filter. Clean the foam pre-cleaner
after every 25 hours of operation or every
season. Service paper cartridge every
100 hours of operation or every season,
whichever occurs first.
Service air cleaner more often under
dusty conditions.
1. Remove knob(s) and cover.
TO SERVICE PRE-CLEANER
2. Slide foam pre-cleaner off cartridge.
3. Wash it in liquid detergent and water.
4. Squeeze it dry in a clean cloth.
5. Saturate it in engine oil. Wrap it in
clean, absorbent cloth and squeeze to
remove excess oil.
NOTE: If very dirty or damaged, replace
pre-cleaner.
6. Reinstall pre-cleaner over cartridge.
7. Reinstall cover and secure with
knob(s).
TO SERVICE CARTRIDGE
1. Remove cartridge nut.
2. Carefully remove cartridge to prevent
debris from entering carburetor.
Clean base carefully to prevent debris
from entering carburetor.
3. Clean cartridge by tapping gently on
flat surface.
NOTE: If very dirty or damaged, replace
cartddge.
4. 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 deteriora-
tion of the cartridge. Do not oil cartridge.
Do not use pressurized air to clean or dry
cartridge.
Cover Knob
B Nut
Foam _ Cartridge
Pre-Cleaner
_Base
MUFFLER
Inspect and replace corroded muffler and
spark arrester (if equipped) as it could
create a fire hazard and/or damage.
SPARK PLUGS
Replace spark plugs at the beginning of
each mowing season or after every 100
hours of operation, whichever occurs first.
Spark plug type and gap setting are
shown in "PRODUCT SPECIFICATIONS"
section of this manual.
IN-LINE FUEL FILTER
The fuel filter should be replaced once
each season. If fuel filter becomes
clogged, obstructing fuel flow to carbure-
tor, replacement is required.
1. With engine cool, remove filter and
plug fuel line sections.
2. Place new fuel filter in position in fuel
line with arrow pointing towards
20 carburetor.