Spark Plugs - Craftsman 917.28634 Operator's Manual

& Use gauge on oil fill cap/dipstick for
checking level. For accurate reading,
insert dipstick into the tube and push
down firmly into place before removing.
Keep oil up to, but not over, the "FULE'
line on dipstick. Push dipstick down
firmly into the tube when finished,
ENGINE OIL FILTER
Replace the engine oil filter every season
or every other oi! change if the tractor is
used more than I00 hours in one year,
AIR FILTER
Your engine will not run properly using a
dirty air filter° CIean 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 cover.
TO SERVICE PRE-CLEANER
2. Wash it in liquid detergent and water,
3. Squeeze it dry in a clean ciotho
4, 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.
TO SERVICE CARTRIDGE
1. Clean cartridge by tapping gently on
flat surface. If very dirty or damaged,
replace cartridge.
2, Reinstall precteaner cartridge, cover
and secure.
IMPORTANT: Petroleum solvents, such
as kerosene, are not to be used to clean
the cartridge_ They may cause deterio-
ration of the cartridge. Do not oil cartridge,
Do not use pressurized air to clean or dry
cartridge.
Cartridge
Knobs
f
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 stub-
born dried gum fibers.
CLEAN AIR INTAKE/COOLING AREAS
To insure proper cooling, make sure the
grass screen, cooling fins, and other exter-
nal surfaces of the engine are kept clean
at all times.
Every 100 hours of operation (more often
under extremely dusty, dirty conditions),
remove the blower housing and other cool-
ing shrouds. Clean the cooling fins and
external surfaces as necessary. Make sure
the cooling shrouds are reinstalled.
NOTE; Operating the engine with a
blocked grass screen, dirty or plugged
cooling fins, and!or cooling shrouds
removed will cause engine damage due to
overheating.
MUFFLER
Inspect and replace corroded muffler and
spark arrester (if equipped) as it could cre-
ate a fire hazard and/or damage,
SPARK
PLUG(S)
Replace spark plug(s) 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 carbu-
retor, 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 carbu-
retor.
3. Be sure there are no fuel line leaks and
clamps are properly positioned.
4. Immediately wipe up any spilled gaso-
line,
CLEANING
• Clean engine, battery, seat, finish, etco
of all foreign matter,
• Keep finished surfaces and wheels free
of all gasoline, oil, etc.
• Protect painted surfaces with auto-
motive type wax.
We do not recommend using a garden
hose or pressure washer to clean your
tractor unless the engine and transmis-
sion are covered to keep water out. Water
in engine or transmission will shorten the
useful life of your tractor, Use compressed
air or a leaf blower to remove grass,
201eaves and trash from tractor and mower.