Craftsman 917.377421 Owner's Manual page 17

TROUBLESHOOTING CHART
PROBLEM CAUSE
Loss of power
Poor cut - uneven
Excessive
vibration
Starter rope hard
to pull
Grass catcher
not filling (if so
equipped).
Hard to push
• Rear of lawn mower housing
or cutting,bladedragging /
in heavy grass.
• Cutting too much grass.
• Dirty air filler.
• BuilcLup of grass, leaves,
and trash under mower.
• Too much oil in engine.
• Walking speed too fast.
•Wom, bent or loose blade.
• Wheel heights uneven.
• Buildup of grass, leaves
and trash under mower.
• Wom, bent or loose blade.
• Bent engine crankshaft.
• Engine flywheel brake is on
when control bar is released
• Bent engine crankshaft.
• Blade adapter broken.
• Blade dragging in grass.
• Cutting heighttoo low.
• Lift on blade worn off.
• Catcher not venting air.
• Grass is too high or wheel
height is too low.
• Rear of lawn mower
housing or blade dragging
in grass.
• Grass catcher too full.
• Handle height positionnot
rightfor you.
CORRECTION
• Set to =Higher Cut"
position.
• Set to "Higher Cut"
position.
• Clean/replace air filter.
• Clean underside of mower
housing.
• Check oil level.
• Cut at slower walking
speed.
• Replace blade. Tighten
blade bolt.
• Set all wheels at same
height
• Clean underside of
mower housing.
• Replace blade. Tighten
blade boll.
• Contact an authorized
service center,
• Depress control bar to
upper handle before
pullingstarter rope.
• Contact an authorized
service center.
• Replace blade adapter.
• Move lawn mower to cut
grass or to hard surface
to start engine.
• Raise cuttingheight.
• Replace blade.
• Clean grass catcher.
• Raise cutting height.
• Raise rear of lawn mower
housing one (1) setting
higher.
• Empty grass catcher.
• Adjust handle height to
suit,
17