Craftsman 917.270512 Owner's Manual page 30

TROUBLESHOOTING CHART
PROBLEM
Poor cut - uneven
(cont'd)
Mower blades will
not rotate
Poor grass dis-
charge
•Headlight(s) not
working (if so
equipped)
Battery will not
charge
Engine =backfires"
when tuming
engine =OFF"
CAUSE
• 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.
• Engine speed too slow.
• Travel speed too fast.
• Wet grass.
• Mower deck not level.
• Low/uneven tire air pres-
sure.
•Wom, bent or loose blade.
• Buildup of grass, leaves
and trash under mower.
• Mower drive belt wom.
• Blades improperly
installed.
• Improper blades used.
Clogged mower deck vent
holes from buildup of
grass, leaves, and trash
around mandrels.
• Switch is "OFF".
• Bulb(s) bumed 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.
• Tum switch "ON".
• Replace bL=]5(sT. _......
• Check/replace light switch.
• Check wiring and connections.
• Replace fuse.
• Replace battery.
• Check/clean all connections.
• Replace regulator.
• Replace altemator.
Move throttle control to
"SLOW" position and allow
to idle for 30 seconds before
stopping engine.
3O