Craftsman 143.974506 Owner's Manual page 21

TROUBLESHOOTING POINTS
PROBLEM
Does not start
Loss of power
- ,,, m
Poor cut - uneven
Excessive vibration
Starter rope hard to pull
Grass catcher not filling
(if so equipped)
CAUSE
1 Dirty air tilter°
2. Out of fuel.
3. Stale fuet
4 Water in fuel
5. Spark plug wire is disconnected
6 Bad spark plug
7. Loose blade or broken blade adapter
8. Control bar in released position
9 Controlbar defective
....... ,. ..... :..... =_ ..... ,r ....
1,, Rear of fawn mower housing/blade dragging
in heavy 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 ortoose blade
2, Wheel heights uneven
3 Low engine speed
4 Buildup of grass, leaves, and trash under mower.
1, Worn, bent or loose blade.
2 Bent engine crankshalt,
i Engine flywheel brake is on when control bar ts
released,,
2, Bent engine crankshaft
3, Blade adapter broken,
4 Blade dragging in grass°
t Cutting height too low
2. Lift on blade worn off
3, Catcher not venting air
4 Low engine speed
1. Grass is too high or wheel height is too low,
2. Rear of lawn mower housing/blade dragging
in grass
3 Grass catcher too full
4. Handle height position not right for you
CORRECTION
1 Clean/replace air filter.,
2 Fill fuel tank.,
3,. Drain tank and retilt with fresh clean fuel
4. Drain fuel tank and carburetor and refill tank witt_ fresh
gasoline,,
5 Connect wire to plug
6. Replace spark plug
7 Tighten blade bott or repiace blade adapter
8, Depress control bar to handle
9, Reptace control bar.
: .............. ,u,u.....
I Set in"Higher Cut" position
2 Set in "Higher Cut" position
3 Cleanlreplace air filter
4, Clean underside of mower housing,,
5 Check oil level
6 Cut at slower walking speed,
1 Replace blade Tighten blade bolt
2, Set all wheels at same height
3 Contact an authorized service center/department
4 Clean underside of mower housing
1 Replace blade. Tighten blade belt
2. Contact an authorized service center/department,
1 Depress control bar to upper handle before
pulling starter rope.
2. Contact an authorized service center/department
3 Replace biade 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
4. Contact an authorized sewice centerldeparlment
1 Raise cutting height
2, Raise rear of lawn mower housing one (1)
setting higher
3, Empty grass catcher.
4 Adiust handle height to suit
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