Craftsman 917.28728 Operator's Manual page 30

TROUBLESHOOTING
CHART:
See appropriate section in manual unless directed to Sears service center
_ROBLEM CORRECTmON
Loss of power
(continued)
Excessive
vibration
Engine dies when
tractor is shifted
into reverse
Engine continues
to run when
operator [eaves
seat with
attachment
clutch engaged
Poor cut - uneven
CAUSE
6. Faulty spark plug.
7. Dirty fuel filter.
8. Stale or dirty fuel.
9. Water in fuel.
10. Spark plug wire loose.
11. Dirty engine air screen/fins.
12. Dirty/clogged muffler.
13. Loose or damaged wiring.
14. Carburetor out of adjustment.
15, Engine valves out of
adjustment.
1. Worn, bent or loose blade.
2. Bent blade mandrel.
3. Loose/damaged part(s).
.
Reverse operation system
(ROS) is not "ON" while
mower or other attachment
is engaged.
1. Faulty operator-safety
presence control system.
,
2.
3.
4.
5.
Worn, bent or loose blade.
Mower deck not level.
Buildup of grass, leaves, and
trash under mower.
Bent blade mandrel.
Clogged mower deck vent
from build-up of grass, leaves,
and trash around mandrels.
6. Clean and regap or change
spark plug.
7. Replace fuel filter.
8. Empty fuel tank and refill tank
with fresh, clean gasoline.
9. Empty fuel tank and carbure m
tor, refill tank with fresh gasm
oline and replace fuel filter.
10. Connect and tighten spark
plug wire.
11. Clean engine air screen/fins.
12. Clean/replace muffler.
13. Check all wiring.
14. See "To Adjust Carburetor"
in Service and Adjustments
section.
15. Contact a Sears or other
qualified service center.
1. Replace blade. Tighten blade
bolt.
2. Contact a Sears or other
qualified service center.
3. Tighten loose part(s).
Replace damaged parts.
,
,
Turn ignition key to
ROS "ON" position.
See Operation section.
Check wiring, switches and
connections. If not corrected,
contact a Sears or other
qualified service center.
t. Replace blade. Tighten blade
bolt.
2. Level mower deck.
3. Clean underside of mower
housing.
4. Contact a Sears or other
qualified service center.
5. Clean around mandrels to
open vent holes.
3O