Craftsman EZ3 917.270781 Owner's Manual page 30

TROUBLESHOOTING CHART
CAUSE CORRECTION
PROBLEM
Loss of power
(cont'd)
Excessive vibration
Engine continues to
run when operator
leaves seat with at-
tachment clutch en-
gaged
Poor cut - uneven
Mower blades will not
rotate
• Build-up of grass, leaves and
trash under mower,
• Dirty air filter.
• Low oil level/dirty oil,
• Faulty spark plug.
• Dirty fuel filter.
• Stale or dirty fuel.
• Water in fuel.
• Spark plug wire loose.
Dirty engine air screen/fins.
Dirty/clogged muffler.
• Loose or damaged wiring.
• Carburetor out of adjustment.
• Engine valves out of adjust-
ment.
• Worn, bent or loose blade.
• Bent blade mandrel.
• Loose/damaged part(s).
• Faulty operator-safety pres-
ence control system.
• Worn, Ioent or loose blade.
• Mower deck not level.
• Buildup of grass, leaves, and
trash under mower.
• Bent blade mandrel.
• Clogged mower deck vent
holes from buildup of
grass, leaves, and trash
around mandrels.
• Obstruction in clutch mecha-
nism.
• Worn/damaged mower drive
belt.
• Frozen idler pulley.
Frozen blade mandrel.
• Clean underside of mower
housing.
• Clean/replace air filter.
• Check oil level/change oil.
• Clean and regap or change
spark plug.
• Replace fuel filter.
• Drain fuel tank and refill with
fresh gasoline.
• Drain fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
• Connect and 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 an authorized service
center.
• Replace blade. Tighten blade
bolt.
• Replace blade mandrel.
• Tighten loose part(s). Replace
damaged parts.
• Check wiring, switches and
connections. If not
corrected, contact an autho-
rized service center/
department.
• Replace blade. "nghten 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.
3O