Craftsman 917.378551 Owner's Manual page 17

TROUBLESHOOTING - See appropriate section in manual unless directed
& Repair Center.
CAUSE CORRECTION
to a Sears Parts
PROBLEM
Does not start
(continued)
Loss of power
Poor cut -
uneven
5. Spark plug wire disconnected.
6. Bad spark plug.
7. Loose blade or broken
blade adapter.
8. Control bar in released position
9. Control bar defective.
10.Fuet valve lever (if so
equipped) in OFF position.
11 .Weak battery (if equipped).
12. Disconnected battery
connector (if equipped).
1. Rear of mower housing or
blade dragging in grass.
2. Cutting too much grass.
3. Dirty air filter.
4. Buildup of grass, leaves,
and trash under mower.
5. Too much oil in engine.
6. Walking speed too fast.
1. Worn, bent or loose blade.
2. Wheel heights uneven.
3. Buildup of grass, leaves
and trash under mower.
5. Connect wire to spark plug.
6. Replace spark plug.
7. Tighten blade bolt or
replace blade adapter.
8. Depress control bar to handle
9. Replace control bar.
10.Turn fuel valve lever
to the ON position.
11. Charge battery.
12. Connect battery to engine.
1. Raise cutting height.
2. Raise cutting height.
3. Clean!replace air filter.
4. Clean underside of mower
housing.
5. Check oil level.
6. Cut at slower walking speed.
1. Replace blade. Tighten bolt.
2. Set all wheels to same height.
3. Clean underside of
mower housing.
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten bolt.
vibration 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.
Bent engine crankshaft.
Blade adapter broken.
Blade dragging in grass.
.
2.
3.
4.
1. Depress control bar to
upper handle before
pulling the 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.
not filling 2. Lift on blade worn off. 2. Replace blade.
(If so equipped) 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 tow.
2. Rear of mower housing or
blade dragging in grass.
3. Grass catcher too full.
4. Handle height position not
right for you.
2. Raise rear of mower housing
one (1) setting higher.
3. Empty grass catcher.
4. Adjust handle height to suit.
Loss of drive 1. Belt wear. 1. Check/replace drive belt.
or slowing of 2. Belt off of pulley. 2. Check/reinstall drive belt.
drive speed 3. Drive cable worn or broken. 3. Replace drive cable.
17