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TROUBLESHOOTING
CHART
PROBLEM
CAUSE
i Lossof power(cont'd)
trash under mower.
+ Dirtyair filter.
+ Low o]tlevel/dirtyoil.
+ Faulty spark plug.
Excessive vibration
° Dirty"fueJ lifter.
= 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.
CORRECTION
o Clean underside of mower hous-
ing.
- CJean/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 carburetor,
refitl 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 'q'o Adjust Carburetor" in
Service and Adjustments
section.
• Contact an authorized service
Poor cut + uneven
Engine continues to
run when operator
leaves seat with at-
tachment clutch
engaged
+
Poor cut - uneven
e
o
e
Worn, bent or loose blade.
, ...............
center.
- Replace blade,
Bent blade mandrel.
Loose/damaged
part(s).
Faulty operator-safety
pres-
ence control system.
•
Worn, bent or loose blade.
e
Mower deck not level.
Buildup of grass, leaves, and
trash under mower,
Bent blade mandrel.
Clogged mower deck vent
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+
in,
Replace blade mandrel.
(cont'd)
Mower blades wilt not
rotate
_rass
discharge
holes from buildup of
grass, leaves, and trash
around mandrels+
+ Obstruction in clutch mecha-
nism.
+ Worn/damaged
mower drive
belt.
= Frozen id+er pulley,
+ Frozen blade mandrel,
° Engine speed too slow.
Travel speed too fast.
+ Wet grass.
+ Mower deck not level.
e
e
8
e
e
Clean around mandrels to open
vent holes.
Remove obstruction,
Replace mower drive belt.
Replace idler pulley.
Replace blade mandrel.
Place throttle control in "FAST"
position.
Shift to slower speed,
Allow grass to dry before mow-
ing.
31
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