Craftsman 917.378521 Owner's Manual page 18

TROUBLESHOOTING- See appropriate section in manual unless directed
to a Sears Service Center.
PROBLEM CAUSE CORRECTION
Poor cut- 1. Worn, bent or loose blade. 1. Replace blade. Tighten
uneven blade bolt.
2. Wheel heights uneven. 2. Set all wheels at same
height.
3. Buildup of grass, leaves 3. Clean underside of
and trash under mower, mower housing.
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten
vibration blade bolt.
2. Bent engine crankshaft. 2. Contact a Sears or other
qualified service center.
Starter rope Engine flywheel brake is on
hard to pull when control bar is released.
.
2.
3.
4.
Bent engine crankshaft.
Blade adapter broken.
Blade dragging in grass.
1. Depress control bar to
upper handle before
pulling starter rope.
2. Contact a Sears or other
qualified service center.
3. Replace blade adapter.
4. Move lawn mower to cut
grass or to hard surface.
Grass catcher 1. Cutting height too low. 1. Raise cutting height.
notfilling 2. Lift on blade worn off. 2. Replace blade.
(Ifsoequipped) 3. Catcher not venting air. 3. Clean grass catcher.
Hard to push ! 1. Raise cutting height. 1. Grass is too high or wheel
height is too low.
2. Rear of lawn mower
housing or cutting blade
dragging in grass.
3. Grass catcher too full.
4. Handle height position not
right for you.
1. Belt wear.
2. Belt off of pulley.
3. Drive cable worn or broken.
4. Dirt in drive pinions.
5. "Loose" drive control system.
Loss of drive
or slowing of
drive speed
2. Raise rear of lawn mower
housing one (1) setting
higher.
;3. Empty grass catcher.
4. Adjust handle height to suit.
1. Check/replace drive belt.
2. Check/reinstall drive belt.
3. Replace drive cable.
4. Clean drive pinions.
5. Adjust drive control.
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