Craftsman 917.389391 Owner's Manual page 17

6.0 horsepower 21" multi-cut rotary lawn mower
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TROUBLESHOOTING
CHART
PROBLEM
CAUSE
CORRECTION
Excessive
vibration
Starter rope hard
topull
Gross catcher
not filling (if so
equipped)
Hard to push
1.
Worn, bent or loose blade.
2.
Bent engine crankshaft.
,
Engine flywheel brake is on
when control bar is released.
2.
Bent engine crankshaft.
3.
Blade adapter broken.
4.
Blade dragging in grass.
1.
Cutting height too low.
2.
Lift on blade wom oft.
3.
Catcher not venting air.
1.
Grass is too high or wheel
height is too low.
2.
Rear of lawn mower
housing or blade dragging
in grass.
3.
Grass catcher too full.
4.
Handle height position not
right for you.
1.
Replace blade. Tighten
blade bolt.
2.
Contact an authorized
service center.
1.
Depress control bar to
upper handle before
pulling starter rope.
2.
Contact an authorized
service center.
3.
Replace blade adapter.
4.
Move lawn mower to cut
grass or to herd surface
1.
Raise cutting height.
2.
Replace blade.
3.
Clean grass catcher.
I1.
Raise cutting height.
i2.
Raise rear of lawn mower
housing one (1) setting
higher.
3.
Empty grass catcher.
4.
Adjust handle height to
suit.
17

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