Craftsman EZ3 917.377591 Owner's Manual page 17

TROUBLESHOOTING CHART
-ROBLEM
Loss of power
Poor cut- uneven
Excessive
vibration
Starter rope hard
to pull
Grass catcher
not filling (if so
equipped)
Hard to push
CAUSE
• Rear of lawn mower housing
or cutting blade dragging
in heavy grass,
o Cutting too much grass.
• Dirty air filter,
• Buildup of grass, leaves,
and trash under mower_
° Too much oil in engine,
° Walking speed too fast.
• Worn, bent or loose blade_
, Wheel heights uneven.
• Buildup of grass, leaves
and trash under mower.
i u
L__
o Worn, bent or loose blade,
° Bent engine crankshaft.
,, ,,,,,, ........ ,,
• Engine flywheel brake is on
when control bar is released.
• Bent engine crankshaft,
o Blade adapter broken_
• Blade dragging in grass,
• Cutting height too low.
o Uft on blade worn off.
o Catcher notventing air.
° Grass is too high or wheel
height is too low.
° Rear of lawn mower
housing or blade dragging
in grass.
o Grass catcher too full.
° Handle height position not
right for you.
CORRECTION
i
o Set to "Higher Cut"
position.
- Set to "Higher Cut"
position.
° Clean/replace air filter.
o 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 bolt,
• Contact an authorized
service center.
, Depress control 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 sudace
to start engine.
o Raise cutting height,
• Replace blade.
o 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