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TROUBLESHOOTING CHART
PROBLEM CAUSE
LOSSof power •
Cutting too much grass/too
fast.
Throttle in "CHOKE"
position.
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.
Excessive
;vibration
Enginecontinues •
to run
when operator
leaves seat
with attachment
clutch engaged
Poor cut- uneven •
Mower blades will •
not rotate
Dirty engine air screen/fins.
Dirty/clogged muffler.
Loose or damaged wiring.
Carburetor out of
adjustment.
Engine valves out of
adjustment.
CORRECTION
• Set in "Higher Cut" position/
reduce speed.
• Adjust throttle control.
Worn, bent or loose blade. • Replace blade.
Tighten blade bolt.
Bent blade mandrel. • Replace blade mandrel.
Loose/damaged part(s). • Tighten loose part(s).
Replace damaged parts.
Faulty operator-safety • Check wiring, switches and
presence control system, connections. If not
corrected, contact an autho
rized service center/
department.
Worn, bent 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
mechanism.
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 carbure
tor, 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 Adjustments section.
Contact an authorized
service 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.
31
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