Craftsman 917.271070 Owner's Manual page 29

}ROBLEM
Loss of power (cont'd)
TROUBLESHOOTING CHART
CAUSE
• Build-up of grass, leaves and
trash under mower.
• Dirty air filter.
• Low oil level/dirty oil.
• Faulty spark plug.
Excessive vibration
Engine continues to
run when operator
leaves seat with
attachment clutch
engaged
Poor cut - uneven
Mower blades will not
rotate
Poor grass discharge
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, bent or loose blade.
• Mower deck not level,
• Buildupof 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.
• Engine speed too slow.
• Travel speed too fast.
• Wet grass.
CORRECTION
• Clean underside of mower hous-
ing.
• Clean/replace air filter.
• Check oil level/change oil.
• Clean and regap or change
spark plug.
• Replace fuel filter.
• Drain fuel tank and refillwith
fresh gasoline.
I o Drain fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
• Connect and tighten spark plug
wire.
• Clean engine airscraen/fins,
• Clean/replace muffler.
• Check all wiring.
• See "To Adjust Carburetor" in
Service and Adjustments
section.
• ContaCtan authorized service
center.
• Replace blade. Tighten blade
bolt.
• Replace blade mandrel.
• Tighten loose part(s). Replace
damaged parts.
• Check wiring, switches and con-
nections. If not
corrected, contact an authorized
service center/
department.
• Replace blade. Tighten blade
bolt.
• Level mower deck.
• Clean underside of mower hous-
ing.
• Replace blade mandrel.
• Clean around mandrels to open
vent holes.
• Remove obstruction.
• Replace mower drive belt.
• Replace idler pulley.
=• Replace blade mandrel.
io Place throttle control in "FAST"
position.
Shift to slower speed.
Allow grass to dry before mow-
ing.
29