Craftsman 917.28746 - Manual (Page 17)

TROUBLESHOOTING CHART:
See appropriate section in manual unless directed to Sears service center
PROBLEM CAUSE CORRECTION
Loss of poWer 6. Faulty spark plug. 6. Clean and regap or change
(continued) spark plug.
7. Dirty fuel filter. 7. Replace fuel filter.
8. Stale or dirty fuel. 8. Empty fuel tank and refill tank
with fresh, clean gasoline.
9. Water in fuel. 9. Emptyfuel tank and carbure-
tor, refill tank with fresh gas-
olineand
replace fuel filter.
10. Spark plug wire loose. to. Connect and tighten spark
plug wire.
11. Dirty engine air screen/fins. 11. Clean engine air screen/fins.
12. Dirty/clogged muffler. 12. Clean/replace muffler.
13. Loose or damaged wiring. 13. Check all wiring.
14. Carburetor out of adjustment. 14. See "To Adjust Carburetor"
in Service and Adjustments
section.
15. Engine valves out of 15. Contact a Sears or other
adjustment. qualified service center.
.
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade
vibration bolt.
2. Bent blade mandrel. 2. Contact a Sears or other
qualified service center.
3. Loose/damaged partes). 3. Tighten loose partes).
Replace damaged parts.
Engine dies when 1. Reverse operation system 1. Turn ignition key to
tractor is shifted (ROS) is not "ON" while ROS "ON" position.
into reverse mower or other attachment See Operation section.
is engaged.
Engine continues 1. Faulty operator-safety 1. Check wiring, switches and
to run when presence control system. connections. If not corrected,
operator leaves contact a Sears or other
seat with qualified service center.
attachment
clutch
engaged
Poor cut. uneven 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade
bolt.
2. Mower deck not level. 2. Level mower deck. .
3. Buildup of grass, leaves, and 3. Clean underside of mower
trash under mower. housing.
4. Bent blade mandrel. 4. Contact a Sears or other
qualified service center.
5. Clogged mower deck vent 5. Clean around mandrels to
from build-up of grass, leaves, open vent holes.
and trash around mandrels.
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TROUBLESHOOTING CHART:
See appropriate section in manual unless directed to Sears service center
PROBLEM CAUSE CORRECTION
Mower blades will 1. Obstruction in clutch 1. Removeobstructioil.
not rotate mechanism.
2. Worn/damaged mower drive 2. Replace mower drive belt.
belt.
3. Frozen idler pulley. 3. Replace idler pulley.
4. Frozen blade mandrel. 4. Contact a Sears or other
qualified service center.
5. Mower belt off engine pulley. 3. Install belt on engine pulley.
Poor grass 1. Engine speed too slow. 1. Place throttle control in
discharge "FAST" position.
2. Travel speed too fast. 2. Shift to slower speed.
3. Wet grass. 3. Allow grass to dry before
mowing.
4. Mower not level. 4. Level mower.
5. Low/uneven tire air pressure. 5. Check tires for proper air
pressure.
6. Worn, bent or loose blade. 6. Replace/sharpen blade .
Tighten blade bolt.
7. Buildup of grass, leaves and 7. Clean underside of mower
trash under mower. housing.
8. Mower drive belt worn. 8. Replace mower drive belt.
9. Blades improperly installed. 9. Reinstall blades sharp edge
down.
10. Improper blades used. 10. Replace with blades listed
in this manual.
11. Clogged mower vent 11. Clean around mandrels to
holes from buildup of grass, open vent holes.
leaves, and trash around
mandrels.
Headlight(s) not 1. Ught switch is "OFF". 1. Turn light switch "ON".
working 2. Bulb(s) or lamp(s) burned out. 2. Replace bulb(s) or lamp(s).
(if so equipped) 3. Faulty light switch. 3. Check/replace light switch.
4. Loose or damaged wiring. 4. Check wiring and connections.
5. Blown fuse. 5. Replace fuse.
Battery will not 1. Bad battery cell(s). 1. Replace battery.
.
charge 2. Poor cable connections. 2. Check/clean all connections.
3. Faulty regulator 3. Replace regulator.
(if so equipped).
4. Faulty alternator. 4. Replace alternator.
Loss of drive 1. Freewheel control in 1. Place freewheel control in
"disengaged" position. "engaged" position.
2. Motion drive belt worn, 2. Replace motion drive belt.
damaged, or broken.
3. Air trapped in transmission 3. Purge transmission.
during shipment or servicing.
Engine "backfires' 1. Engine throttle control not set 1. Move throttle control
when turning between half and full speed between half and full speed
engine "OFF" (fast) position before stopping (fast) position before
engine. stopping engine.
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