Troubleshooting Chart - Craftsman 917.389490 Owner's Manual

6.0 horsepower 21" rear discharge rotary lawn mower
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TROUBLESHOOTINGCHART
CAUSE
PROBLEM
Poor cut - uneven
Excessive
vibration
Starter rope hard
to pull
Grass catcher
not filling (if so
equipped)
Hard to push
1. Worn, bent or loose blade.
2. Wheel heights
uneven.
3. Buildup of grass, leaves
and trash under mower.
1. Worn, bent or loose blade.
2. Bent engine crankshaft.
.
2.
3.
4.
Engine flywheel
brake is on
when control bar is released.
Bent engine crankshaft.
Blade adapter
broken.
Blade dragging
in grass.
1. Cutting height too low.
2. Lift on blade worn off.
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.
1413: Grass catcher too full.
Handle height position not
right for you.
CORRECTION
1. Replace
blade. Tighten
blade bolt.
2. Set all wheels at same
height
3. Clean underside
of
mower housing.
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 hard surface
to start engine
1. Raise cutting
height.
2. Replace
blade.
3. Clean grass catcher.
1. Raise cutting height.
2. 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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