Craftsman EZ3 917.272960 Owner's Manual page 33

PROBLEM
Loss of power
nontinued
TROUBLESHOOTING CHART
CAUSE
• Faultyspark plug.
• Dirtyfuel filter.
• Stale or dirtyfuel.
• Water in fuel.
Excessive
vibration
Engine continues
to run when
operator leaves
seat with attach-
ment clutch
engaged
Poor cut - uneven
Mower blades will
not rotate
Poor grass
discharge
• Spark plug wire loose.
• Dirtyengine air screen/fins.
• Dirty/cloggedmuffler.
• Loose or damaged wiring.
• Carburetorout of adjustment.
• Engine valvesout of
adjustment.
• Worn, bent or looseblade.
• Bent blade mandrel.
• Loose/damagedpart(s).
• Faultyoperator-safety
presencecontrolsystem.
• Worn, bent or looseblade.
• Mowerdeck not level.
• Buildupof grass, leaves, and
trash under mower.
• Bent blade mandrel.
• Clogged mower deck vent
holesfrom buildupof grass,
leaves, and trash around
mandrels.
• Obstruction in clutch
mechanism.
• Worn/damaged mower drive
belt.
• Frozen idler pulley.
• Frozen blade mandrel.
• Engine speed too slow.
• Travel speed too fast.
• Wet grass.
• Mower deck not level.
• Low/uneven tire air
pressure.
33
CORRECTION
• Clean and rogap or change
sparkplug.
• Replacefuel filter.
• Drain fuel tank and refillwith
fresh gasoline.
• Drain fuel tank and carburetor,
refilltank withfresh gasoline
and replacefuel filter.
• Connectand tightenspark
plugwire.
• Clean engine air screen/fins.
• Clean/replecemuffler.
• Check all wiring.
• See "ToAdjustCarburetor"
in ServiceAdjustmentssection
• Contactan authorized
servicecenter/department.
• Replace blade, Tighten blade
bolt.
• Replace blade mandrel.
• Tighten loose part(s).
Replace damaged parts.
• Check wiring,switches and
connections.If not corrected,
contactan authorizedservice
center/department.
• Replace blade. Tighten blade
bolt.
• Level mower deck.
• Clean underside of mower
housing.
_,Replace blade mandrel.
• Clean around mandrels to
open vent holes.
• Remove obstruction.
• Replace mower drive belt.
• Replace idler pulley.
• Replace blade mandrel.
• Place throttle control in "FAST"
position,
• Shift to slower speed.
• Allow grass to dry before
mowing.
• Level mower deck.
• Check tires for proper air
pressure.