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TROUBLESHOOTING CHART
PROBLEM
Loss of power (cont,d)
CAUSE
• Build-upof grass, leaves and
trash under mower.
• Dirty air tilter.
• Low oil level/dirty oil.
• Faultyspark plug.
• Dirtyfuel filter.
• Stale or dirtyfuel.
• Water infuel.
• Spark plug wire loose.
Excessive vibration
Engine continues to
run when operator
leaves seat with at-
tachment clutch
engaged
Poor cut - uneven
Mower blades will not
rotate
Poor grass discharge
• 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 ddve
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 tilter.
• Check oil level/change oil.
• Clean and regap or change
spark plug.
• Replace fuelfilter.
• Drain fuel tank and refillwith
fresh gasoline.
• Drain fuel tank and carburetor,
refilltank with fresh gasolineand
replace fuel filter.
• Connect and tighten spark plug
wire.
• Clean engine air screen/fins.
• Clean/replace muffler.
• Check all widng.
• See =ToAdjust Carburetor_in
Service and Adjustments
section.
• Contact an authorized service
center.
• Replace blade. Tighten blade
bolt.
• Replace blade mandrel.
• Tighten loose part(s). Replace
dama_led pads.
• Check wiring, switches and con-
nections.If not
corrected, contact an authorized
service center/
department.
• Replace blade. Tighten blade
boR.
• Level mower deck.
i ° Clean underside of mower hous-
ing.
• Replace blade mandrel.
• Clean around mandrels to open
vent holes.
• Remove obstruction.
• Replace mower ddve belL
• Replace idler pulley.
• Replace blade mandrel.
• Place throttle control in =FAST"
position.
• Shift to slower speed.
• Allow grass to dry before mow-
ing.
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