Craftsman 917.270840 - Manual (Page 32)

TROUBLESHOOTING CHART
PROBLEM CAUSE CORRECTION
Loss Of power (cont’d) • Build-up of grass, leaves and • Clean underside of mower hous-
trash under mower. ing.
• Dirty air filter. • Clean/replace air filter.
• Low oil level/dirty oil. • Check oil level/change oil.
• Faulty spark plug. • Clean and regap or change
spark plug.
• Dirty fuel filter. • Replace fuel filter.
• Stale or dirty fuel. • Drain fuel tank and refill with
fresh gasoline.
• Water in fuel. • Drain fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
• Spark plug wire loose. • Connect and tighten spark plug
wire.
• Dirty engine air screen/fins. • Clean engine air screen/fins.
• Dirty/clogged muffler. • Clean/replace muffler.
• Loose or damaged wiring. • Check all wiring.
• Carburetor out of adjustment. • See To Adjust Carburetor" in
Service and Adjustments
section.
• Engine valves out of adjust- • Contact an authorized service
ment. center.
Excessive vibration • Worn, bent or loose blade. • Replace blade. Tighten blade
bolt.
• Bent blade mandrel. • Replace blade mandrel.
• Loose/damaged part(s). • Tighten loose part(s). Replace
damaged parts.
Engine continues to • Faulty operator-safety pres- • Check wiring, switches and con-
run when operator ence control system. nections. If not
leaves seat with at- corrected, contact an authorized
tachment clutch service center/
engaged department.
Poor cut - uneven • Worn, bent or loose blade. • Replace blade. Tighten blade
birft.
• Mower deck not level. • Level mower deck.
• Buildup of grass, leaves, and • Clean underside of mower hous-
trash under mower. ing.
• Bent blade mandrel. • Replace blade mandrel.
• Clogged mower deck vent • Clean around mandrels to open
holes from buildup of
grass, leaves, and trash
around mandrels. vent holes.
Mower blades will not • Obstruction in clutch mecha- • Remove obstruction.
rotate nism.
• Wom/damaged mower drive
belt.
• Replace mower drive belt
• Frozen idler pulley. • Replace idler pulley.
• Frozen blade mandrel. • Replace blade mandrel.
Poor grass discharge • Engine speed too slow. • Place throttle control in “FAST
position.
• Travel speed too fast. • Shift to slower speed. ^
• Wet grass. • Allow grass to dry before mow­
ing.
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