Troubleshooting - Husqvarna 917.279220 Owner's Manual

TROUBLESHOOTING POINTS
CAUSE CORRECTION
PROBLEM
Engine dies when
tractor is shifted
into reverse
Engine continues to
run when operator
leaves seat with
attachment clutch
engaged
Poor cut - uneven
Mower blades will not
rotate
Poor grass discharge
Headlight(s) not
working
(if so equipped)
Battery will not charge
Loss of drive
Engine "backfires"
when turning
engine "OFF"
1, Reverse operation system
(ROS) is not "ON" while
mower or other attachment
is engaged.
1. Faulty operator-safety presence control system.
1. Worn, bent or loose blade.
2. Mower deck not level.
3. Buildup of grass, leaves, and trash under mower.
4. Bent blade mandrel.
5. Clogged mower deck vent holes from buildup of
grass, leaves, and trash around mandrels.
1. Obstruction in clutch mechanism.
2. Worn/damaged mower drive belt.
1. Turn ignition key to
ROS "ON" position.
See Operation section.
Check wiring, switches and connections. If not
corrected, contact an authorized service center/
department.
1. Replace blade. Tighten blade bolt.
2. Level mower deck.
3. Clean underside of mower housing.
4. Replace blade mandrel.
5. Clean around mandrels to open vent holes.
1. Remove obstruction.
2. Replace 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.
3. Replace idler pulley.
4. Replace blade mandrel.
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.
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 air pressure.
6. Replace 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.
1. Light switch is "OFF".
2. Bulb(s) or lamp(s) burned out.
3. Faulty light switch.
4. Loose or damaged wiring.
5. Blown fuse.
1. Bad battery cell(s).
2. Poor cable connections.
3. Faulty regulator (if so equipped).
4. Faulty alternator.
1. Turn light switch "ON".
2. Replace bulb(s) or lamp(s).
3. Check/replace light switch.
4. Check wiring and connections.
5. Replace fuse.
1. Replace battery.
2. Check/clean all connections.
3. Replace regulator.
4. Replace alternator.
1. Freewheel control in "disengaged" position.
2. Motion drive belt worn, damaged, or broken.
3. Air trapped in transmission during shipment
or servicing.
1,
Engine throttle control not set between half and 1.
full speed (fast) position before stopping engine.
1. Place freewheel control in "engaged" position.
2. Replace motion drive belt.
3. Purge transmission.
Move throttle control between half and full speed
(fast) position before stopping engine.
28