Craftsman 917.273421 - Loss of Power; Excessive Vibration; Engine Overheats; Poor Cut Uneven

PROBLEM
Lossof Power (oon't)
"ROUBLESHOOTING CHART
CAUSE
• Faulty spark plug.
• Oirty fuel filter.
• Stale or dirty fuel.
• Waterin fuel.
Excessivevibration
Engine continuesto run
when operator leaves
seat with attachment
clutch engaged
Engine Overheats
Poor cut- uneven
Mower blades will not
otate
Poorgrass discharge
Spark plugwire loose.
Dirty engine air scraen/fins.
• Dirty/clogged muffler.
• Loose or damaged wiring.
• Carburetor out of adjustment,
• Engine valves out of adjustment. •
• Worn, bent or loose blade. •
• Bent blade mandrel.
• Loose/damaged part(s).
• Faulty operator-safety presence
controlsystem.
• Air cleaner element plugged.
• Engine air intake screen plugged. •
• Engine oil low. •
• Engine operated too longat slow •
idlespeed.
• Coolant low. •
• Worn, bent or loose blade.
• Mower deck not level. , •
• Buildup of grass, leaves, and •
trash under mower.
• Bent blade mandrel. I °
• Clogged mowerdeck vent holes •
frombuildupof
grass, leaves, and trash around
mandrels.
• Obstruction inclutch mechanism.
• Worn/damaged mowerddve belt.
• Frozen idlerpulley.
• Frozen blade mandrel.
Enginespeed too slow.
• Travel speed too fast.
• Wet grass.
CORRECTION
• Clean and regap orchange spark
plug.
• Replace fuel filter,
• Drain fuel tank and refillwithfresh
gasoline.
Drain fuel tank and carburetor, refill
tank withfresh gasoline and replace
fuel filter.
Connect and tightenspark plug wire.
Clean engine air screen/fins.
Clean/replace muffler.
Check all wiring.
See "To Adjust Carburetor"in Service
and Adjustments
section.
Contact an authorized service center.
Replace blade, 33ghtenblade bolt.
Replace blade mandrel.
"Sghtenloose part(s). Replace dam-
aged parts.
Check wiring, switchesand connec-
tions. If not corrected, contact an
authorized service center/department.
Clean or replace element.
Clean air intake screen.
Add oil.
Operate engine withthrottle level in
"FAST" position,
Add coolant.
Replace blade. 11ghten blade holt.
Level mower deck,
Clean underside of mower housing.
Replace blade mandrel.
Clean around mandrels to open vent
holes.
• Remove obstruction.
• Replace mower ddve belt.
• Replace idlerpulley.
• Replace blade mandrel.
Place throttlecontrolin "FAST"posi-
tion.
• Bhiff to slower speed.
• Allow grass to dry before mowing.
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