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PROBLEM
Loseofpower(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.
• Dirty fuel filter.
• Stale or dirty fuel.
• Water in fuel.
• Spark plug wire loose.
Excessivevibration
Engine continues to
run when operator
leaves seat with at-
tachment clutch
engaged
Poor cut - uneven
Poorcut- uneven
(conrd)
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 blademandrel.
• Loose/damagedpart(s).
• Faultyoperator-safetypres-
ence controlsystem.
• 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 mecha-
nism.
Worn/damaged mower drive
belt.
Frozen idler pulley.
Frozen blade mandrel.
Engine speed too slow.
Travel speedtoo 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.
• Drain fuel tank and carburetor,
refilltank 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 =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
Jama_led 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.mound mandrels to open
vent holes.
• Remove obstruction.
• Replace mower drive belt.
• Replace idler pulley.
• Replace blade mandrel.
• Place throttle control in "FAST"
positS.
• Shift to dower speed.
• Allow grass to dry before mow-
ing.
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