Craftsman 917.28890 Operator's Manual page 19

ENGINE OIL FILTER
Replace the engine oil filter every season or
every other oil change if the tractor is used
more than 100 hours in one year.
AIR FILTER
Your engine will not run properly using a
dirty air filter. Service paper cartridge every
two months or every 25 hours of operation,
whichever occurs first.
Service paper cartridge more often under
dusty conditions.
Replace the paper cartridge annually, or after
every 100 hours of operation.
TO SERVICE CARTRIDGE
• Replace a dirty, bent, or damaged car-
tridge. Handle new cartridge carefully; do
not use if the rubber seal is damaged.
NOTE: Do not wash the paper cartridge
or use pressurized air, as this will damage
the cartridge.
1. Open door (A) on the blower housing to
access the air cleaner element (B).
2. Unhook the latch (C) and remove the
element.
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 stubborn dried gum fibers.
CLEAN AIR INTAKE/COOMNG AREAS
To insure proper cooling, make sure the grass
screen, cooling fins, and other external sur-
faces 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
cooling 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 create
a fire hazard and/or damage.
SPARK PLUG(S)
Replace spark plug(s) atthe 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, ob-
structing fuel flow to carburetor, 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 carburetor.
3. Be sure there are no fuel line leaks and
clamps are properly positioned.
4. Immediately wipe up any spilled gaso-
line.
Clamp
3. Gentlytapthe paperelementtodislodge
dirt.
4. Clean all air cleaner components of any
accumulated dirt or foreign material.
Prevent any dirt from entering the throat
of carburetor.
5. Install cleaned or new element on the
base and secure with latch.
6. Close and latch the door.
CLEANING
• Clean engine, battery, seat, finish, etc.
of all foreign matter.
• Keep finished surfaces and wheels free
of all gasoline, oil, etc.
• Protect painted surfaces with automotive
type wax.
We do not recommend using a garden hose
or pressure washer to clean your tractor
unless the engine and transmission 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, leaves and trash
from tractor and mower.
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