Craftsman 917.377401 Owner's Manual page 16

TROUBLESHOOTING CHART
CAUSE
PROBLEM
Loss_pow_r
Poor cut- uneven
Excessive
vibration
Starter rope herd
to pull
Grass catcher
not filling (if so
equipped)
Hard to push
• Rear of lawn mower housing
or cutting blade dragging
in heavy grass
• Cutting too much grass
• Dirty air filter.
• Buildupof grass, leaves,
and trash under mower.
• Too much oil in engine.
• Waildng speed too fast.
• Wom, bent or loose blade.
• Wheel heights uneven.
• Buildupof grass, leaves
and trash under mower.
• Worn,bent orlooseblade.
• Bentenginecrankshaft.
• Engine fiywheel brake is on
when controlbar is released.
• Bent engine crankshaR.
• Blade adapter broken.
• Blade dragging in grass.
• Cuttingheight too low.
• Li{ton blade wom off.
• Catcher not venting air.
• Grass is too blgh or whee!
height is too low.
• Rear of lawn mower
housing or blade dragging
in grass.
• Grass catcher too full.
• Handle height position not
rightfor you
CORRECTION
• Set to "Higher Cur'
position.
• Set to "Higher Cut"
position.
• Clean/replace air filter.
• Clean underside of mower
housing.
• Check oil level.
• Cut at slower wall_ng
speed.
• Replace blade. T_ghten
blade bolt.
• Set all wheels at same
height
• Clean underside of
mower housing.
• Replace blade Tighten
blade bolt
• Contact an authorized
sewice center
• Depress oontml bar to
upper handle before
pulling starter rope.
• Contact an authorized
service center.
• Replace blade adapter.
• Move lawn mower to cut
grass or to hard surface
• Raise cutting height.
• Rep_ce b _de.
• Clean grass catcher.
• Ra_ ct._'_r_j height.
• Raise rear of lawn mower
ho_r_g one(1) se_ng
higher.
• Empty grass catcher.
• Adjust handle height to
suit.
16