Craftsman 917.270912 Owner's Manual page 30

Poor cut - uneven
(cont'd)
TROUBLESHOOTING CHART
PROBLEM CAUSE
• Clogged mower deck vent
Mower blades will •
not rotate
Poor grass dis- •
charge
Headlight(s) not •
working (if so •
equipped) •
Battery will not
charge •
Engine "backfires"
when turning en-
gine "OFF"
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.
Engine speed too slow.
Travel speed too fast.
Wet grass.
Mower deck not level.
Low/uneven tire air pres-
sure.
Worn, bent or loose
blade.
Buildup of grass, leaves
and trash under mower.
Mower drive belt worn.
Blades improperly in-
stalled.
Improper blades used.
Clogged mower deck vent
holes from buildup of
grass, leaves, and trash
around mandrels.
Switch is =OFF".
Bulb(s) burned out.
Faulty light switch.
Loose or damaged wiring,
Blown fuse.
Bad battery cell(s).
Poor cable connections.
Faulty regulator (if so
equipped).
Faulty alternator.
Engine throttle control not
set at "SLOW"
position for 30 seconds
before stopping engine.
CORRECTION
• 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
mowing.
• Level mower deck.
• Check tires for proper air
pressure.
• Replace/sharpen blade.
Tighten blade bolt.
• Clean underside of mower
housing.
• Replace mower drive belt.
• Reinstall blades sharp edge
down.
• Replace with blades listed in
this manual.
• Clean around mandrels to
open vent holes.
• Turn switch "ON'.
• Replace bulb(s).
• Check/replace light switch.
• Check wiring and connec-
tions.
• Replace fuse.
• Replace battery.
• Check/clean all connections.
• Replace regulator.
• Replace alternator.
• Move throttle control to
"SLOW" position and allow
to idle for 30 seconds before
stopping engine.
30