Troubleshooting - Husqvarna YTH20K46 Owner's Manual

TROU OOTI G POI
PROBLEM
Will not start
Hard to start
Engine will not
turn over
Engine clicks but
wiil not start
Loss of power
Excessive
vibration
CAUSE
1. Out of fuel.
2. Engine not "CHOKED" properly.
3. Engine flooded.
4. Bad spark plug.
5. Dirty air filter.
6. Dirty fuel filter.
7. Water in fuel.
8. Loose or damaged wiring.
9. Carburetor out of adjustment.
CORRECTION
2. See "TO START ENGINE" in Operation section.
3. Wait several minutes before attempting to start.
4. Replace spark plug.
5. Clean/replace air filter.
6. Replace fuel filter.
7. Empty fuel tank and carburetor, refill tank with fresh
gasoline and replace fuel filter.
10. Engine valves out of adjustment.
1. Dirty air filter.
2. Bad spark plug.
3. Weak or dead battery.
4. Dirty fuel filter.
5. Stale or dirty fuel.
6. Loose or damaged wiring.
7. Carburetor out of adjustment.
8. Engine valves out of adjustment.
8. Check all wiring.
9. See "To Adjust Carburetor" in Service Adjustments
section.
10. Contact an authorized service center/department.
1. Clean/replace air filter.
2. Replace spark plug.
3. Recharge or replace battery.
4. Replace fuel filter.
5. Empty fuel tank and refill tank with fresh, clean gas.
6. Check all wiring.
7. See "To Adjust Carburetor" in Service Adjustments
section.
1. Brake pedal not depressed.
2. Attachment clutch is engaged.
3. Weak or dead battery.
4. Blown fuse.
5. Corroded battery terminals.
6. Loose or damaged wiring.
7. Faulty ignition switch.
8. Faulty solenoid or starter.
9. Faulty operator presence switch(es).
1. Weak or dead battery.
2. Corroded battery terminals.
3. Loose or damaged wiring.
4. Faulty solenoid or starter.
1. Cutting too much grass/too fast.
2. Throttle in "CHOKE" position.
3. Build-up of grass, leaves, trash under mower.
4. Dirty air filter.
5. Low oil level/dirty oil.
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).
8. Contact an authorized service center/department.
1. Depress brake pedal.
2. Disengage attachment clutch.
3. Recharge or replace battery.
4. Replace fuse.
5. Clean battery terminals.
6. Check all wiring.
7. Check/replace ignition switch.
8. Check/replace solenoid or starter.
9. Contact an authorized service center/department.
1. Recharge or replace battery.
2. Clean battery terminals.
3. Check all wiring.
4. Check/replace solenoid or starter.
1. Raise cutting height/reduce speed.
2. Adjust throttle control.
3. Clean underside of mower housing.
4. Clean/replace air filter.
5. Check oil level/change oil.
6. Clean and regap or change spark plug.
7. Replace fuel filter.
8. Empty fuel tank and refill tank with fresh, clean gas.
9. Empty fuel tank and carburetor, refill tank with fresh
gasoline 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 Adjustments
15. Contact an authorized service center/department.
1. Replace blade. Tighten blade bolt.
2. Replace blade mandrel.
3. Tighten loose part(s). Replace damaged parts.
25