Craftsman 917.28921 - Manual (Page 18)

AIR FILTER
Your engine will not run properly using a
dirty air filter. 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.
2. Carefully remove air filter cartridge and
pre-cleaner from base.
3. Clean base carefully to prevent debris
from falling into carburetor.
NOTE: If very dirty or damaged, replace
cartridge.
4. Place new pre-cleaner and cartridge
firmly in base.
5. Replace cover.
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 cartridge.
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.
ENGINE COOLING SYSTEM
Debris may clog the engine’s air cool­
ing system. Remove blower housing and
clean area shown to prevent overheating
and engine damage.
Clean out chaff and debris
Air Screen
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 carbure­
tor, replacement is required.
1. With engine cool, remove filter and
plug fuel line sections.
Place new fuel filter in position in fuel line
with arrow pointing towards carburetor.
Be sure there are no fuel line leaks and
clamps are properly positioned.
Immediately wipe up any spilled gaso­
line.
Clamp
2 .
3.
4.
CLEANING
• Clean engine, battery, seat, finish, etc.
of all foreign matter.
• Clean debris from steering plate.
Debris can restrict clutch/brake pedal
shaft movement, causing belt slip and
loss of drive.
A CAUTION: Avoid all pinch points and
movable parts
Clutch/brake pedal
Clean
top side
Steering
Plate
Steering System, Dash,
Fender and Mower Not Shown
18