Craftsman 917.28991 - Manual (Page 24)

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
element.
latch (C) and remove the
5.
6
.
Gently tap the paper element to dislodge
dirt.
Clean all air cleaner components of any
accumulated dirt or foreign material.
Prevent any dirt from entering the throat
of carburetor.
Install cleaned or new element on the
base and secure with latch.
Close and latch the door.
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 airto
remove dirt and stubborn dried gum fibers.
CLEAN AIR INTAKE/COOLING AREAS
To ensure 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 othercooling
shrouds. Clean the cooling fins and external
surfaces as necessary. Make surethe cooling
shrouds are reinstalled.
NOTE: Cperating 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) 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 “PRCDUCT SPECIFICATICNS” 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. Immediatelywipe up any spilled gasoline.
Clamp
Fuel Filter
Clamp
24