Craftsman 917.28918 Operator's Manual page 30

TROUBLESHOOTING CHART:
See appropriate section in manual unless directed to Sears service center
PROBLEM
Loss of power
Excessive vibration
Engine continues to run
Iwhen operator leaves
_seat with attachment
clutch engaged
Poor cut - uneven
cutting
Mower blades will
not rotate
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CAUSE
Cutting too much grass!too fast,,
Throttle in "CHOKE" position.
Build-up of grass, leaves and
trash under mower.
Dirty air filter
Low oiI level/dirty oil.
Faulty spark plug,
Dirty fuel filter°
Stale or dirty fuel.
Water in fuel.
Spark plug wire loose.
Dirty engine air screen/finso
Dirty/clogged muffler.
Loose or damaged wiring.
Carburetor out of adjustment,
Engine valves out of adjustment.
Worn, bent or loose blade_
Bent blade mandrel.
Loose/damaged part(s),,
Faulty operator-safety presence
control system.
Worn, bent or loose blade.
Mower deck not level.
Buildup of grass, leaves, and
trash under mower.
Bent blade mandrel.
Clogged mower deck vent from
build-up of grass, leaves, and
trash around mandrels_
Obstruction in clutch mechanism.
Worn/damaged mower drive belt.
Frozen idler pulley.
Frozen blade mandrel.
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CORRECTION
Raise cutting height/reduce speed,
Adjust throttle control
Clean underside of mower
housing.
Clean/replace air fiiten
Check oil level/change oil
Clean/regap or change spark plug_
Replace fuel filten
Empty fuel tank and refill tank
with fresh, clean gasoline_
Empty fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filtero
Connect/tighten spark plug wire.
Clean engine air screen/fins_
Clean/replace muffler.
Check all wiring.
See "To Adjust Carburetor" in
Service and Adjustments section.
Contact a Sears or other qualified
service center.
Replace blade. Tighten blade bolt,
Contact a Sears or other qualified
service centen
Tighten loose part(s), Replace
damaged parts_
Check wiring, switches and
connections, If not corrected,
contact a Sears or other service
center°
Replace blade,. Tighten blade bolt,.
Level mower deck.
Clean underside of mower
housing.
Contact a Sears or other qualified
service center.
Clean around mandrels to
open vent holes°
Remove obstruction.
Replace mower drive bell
Replace idler pulley.
Contact a Sears or other qualified i
service center°