Craftsman 917.270531 Owner's Manual page 29

TROUBLESHOOTING CHART
CAUSE
PROBLEM
Mower blades will not
rotate (Cont'n)
Poor grass discharge
Headlight(s) not
working (if so
equipped)
Battery will not charge
Engine "backfires"
when turning engine
"OFF"
• Frozen idler pulley.
• Frozen blade mandrel.
• Engine speed too slow,
position.
• Travel speed too fast.
• Wet grass.
mowing.
• Mower deck not level.
• Low/uneven tire air
pressure.
• Worn, bent or loose blade.
Tighten blade bolt.
• Buildup of grass, leaves
and trash under mower.
• Mower drive belt worn.
• Blades improperly
installed
• Improper blades used.
in this manual.
• 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 altemator.
• Engine throttle control
not set at "SLOW"
position for 30 seconds
before stopping engine.
CORRECTION
• Replace idler pulley.
• Replace blade mandrel.
• Place throttle control in "FAST"
• Shift to slower speed.
,• Allow grass to dry before
• Level mower deck.
• Check tires for proper air
pressure.
• Replace/sharpen blade.
• Clean underside of mower
housing.
• Replace mower drive belt.
• Reinstall blades sharp edge
down.
• Replace with blades listed
• Clean around mandrels to
open vent holes.
• Turn switch "ON".
• Replace bulb(s).
• Check/replace light switch.
• Check wiring and connections
• 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.
29