Craftsman 917.270961 - Manual (Page 31)

TROUBLESHOOTING CHART
PROBLEM CAUSE
CORRECTION
Loss of power
(Continued)
• 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
adjustment.
• Clean underside of mower
housing.
• Clean/replace air filter.
• Check oil levei/change oil.
• Clean and regap or change
spark plug.
• Replace fuel filter.
• Drain fuel tank and refill with
fresh gasoline.
• Drain fuel tank and carbure­
tor, refill tank with fresh
gasoline and replace fuel
filter.
• Connect and tighten spark
plug wire.
• Clean engine air screen/
fins.
• Cleari/replace muffler.
• Check all wiring.
• See “To Adjust Carburetor”
in Service Adjustments
section.
• Contact an authorized
service center/department.
Excessive
vibration
• Worn, bent or loose blade.
• Bent blade mandrel.
• Loose/damaged part(s).
' Replace blade.
Tighten blade bolt.
’ Replace blade mandrel.
’ Tighten loose part(s).
Replace damaged parts.
Engine continues
to run when
operator ieaves
seat with
attachment
ciutch engaged
Faulty operator-safety
presence control system. • Check wiring, switches and
connections. If not corrected,
contact an authorized
service center/department.
Poor cut - uneven
• 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.
• Replace blade. Tighten
biade bolt.
• Level mower deck.
• Clean underside of mower
housing.
• Replace blade mandrel.
• Clean around mandrels to
open vent holes.
Mower blades will
not rotate • Obstruction in clutch
mechanism.
• Worn/damaged mower
drive belt.
• Frozen idler puiley.
• Frozen blade mandrel.
Remove obstruction.
Replace mower drive belt.
Replace idler puliey.
Replace blade mandrel.
31