Troubleshooting - Craftsman C459-36100 Operator's Manual

Problem
Engine Fails to start
Engine runs erratic
Engine overheats
Occasional skips (hesitates)
at high speed
Idles poorly
Excessive Vibration
Mower will not
mulch grass
Uneven cut
Wheels will not propel

TROUBLESHOOTING

Cause
1. Blade control disengaged.
2. Spark plug boot disconnected.
3. Fuel tank empty or stale fuel.
4. Engine not primed (if equipped with primer).
5. Faulty spark plug.
6. Blocked fuel line.
7. Engine flooded.
8. Fuel valve (if equipped) closed.
9. Engine not choked (if equipped with choke).
1. Spark plug boot loose.
2. Blocked fuel line or stale fuel.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Unit running with CHOKE applied or in the "ON"
position (if equipped).
1. Engine oil level low.
2. Air flow restricted.
1. Spark plug gap too close.
1. Spark plug fouled, faulty, or gap too wide.
2. Dirty air cleaner.
1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
1. Wet grass.
2. Excessively high grass.
3. Dull blade.
1. Wheels not positioned correctly.
2. Dull blade.
1. Belt not installed properly.
2. Debris clogging drive operation.
3. Damaged or worn belt.
1. Engage blade control.
2. Connect wire to spark boot.
3. Fill tank with clean, fresh gasoline.
4. Prime engine as instructed in the Operation section.
5. Clean, adjust gap, or replace.
6. Clean fuel line.
7. Wait a few minutes to restart, but do not prime.
8. Open fuel valve. See engine manual.
9. Choke engine. See engine manual.
1. Connect and tighten spark plug boot.
2. Clean fuel line; fill tank with clean, fresh gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to engine manual.
6. Put CHOKE in the "OFF" position..
1. Fill crankcase with proper oil.
2. Clean area around and on top of engine.
1. Adjust gap to .030". Refer to engine manual.
1. Reset gap to .030" or replace spark plug.
2. Refer to engine manual.
1. Tighten blade and adapter. Balance blade.
2. See an authorized service dealer.
1. Do not mow when grass is wet; wait until later to cut.
2. Mow once at a high cutting height, then mow again at desired
height or make a narrower cutting path.
3. Sharpen or replace blade.
1. Place front and rear wheels in same height position.
2. Sharpen or replace blade.
1. Checking belt for proper pulley installation and movement.
2. Clean out debris.
3. Inspect and replace belt.
16
Remedy