Craftsman 917.28936 Operator's Manual page 29

TROUBLESHOOTING CHART:
See appropriate section in rnanual unless directed to Sears service center
PROBLEM
Loss of power
(Continued)
CAUSE
9 Water in fuel. 9
Excessive vibration
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). 3
Engine continues to 1 Faulty operator-safety presence 1
run when operator control system.
leaves seat with attach-
ment clutch engaged
Poor cut = uneven 1
cutting 2
3
Mower blades will
not rotate
Worn, bent or loose blade.
Mower deck not level.
Buildup of grass, leaves, and
trash under mower.
Bent blade mandrel.
POOr grass
discharge
5 Clogged mower deck vent from
build-up of grass, leaves, and
trash around mandrels.
1 Obstruction in clutch mechanism.
2 Worn/damaged mower drive belt
3 Frozen idler pulley.
4 Frozen blade mandrel.
1 Engine speed too slow.
2 Travel speed too fast.
3 Wet grass.
4 Mower deck not level.
5 Low/uneven tire air pressure.
6 Worn, bent or loose blade.
7 Buildup of grass, leaves and
trash under mower.
8 Mower drive belt worn.
9 Blades improperly installed.
10 Improper blades used.
11
Clogged mower deck vent holes
from buildup of grass, leaves, and
trash around mandrels.
CORRECTION
Empty fuel tank and carburetor,
refill tank with fresh gasoline and
replace fuel filter.
10 Connect & 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.
Tighten loose part(s).
Replace damaged parts.
Check wiring, switches and
connections. If not corrected,
contact a Sears or other qualified
service center.
1 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.
1 Remove obstruction.
2 Replace mower drive belt.
3 Replace idler pulley.
4 Contact a Sears or other
qualified service center.
1 Place throttle control in "FAST"
position.
2 Shift to slower speed.
3 Allow grass to dry before mowing.
4 Level mower deck.
5 Check tires for proper PSI.
6 Replace/sharpen blade. Tighten
blade bolt.
7 Clean underside of mower
housing.
8 Replace mower drive belt.
9 Reinstall blades sharp edge down.
10 Replace with blades listed in
this manual.
11 Clean around mandrels to
open vent holes.
29