4000EXL Extended Life Generator
13
TROUBLESHOOTING
Problem
Cause
Correction
Engine is running, but no
AC output is available.
1. One of the circuit breakers is open.
2. Fault in generator.
3. Poor connection or defective cord set.
4. Connected device is bad.
1. Reset circuit breaker.
2. Contact Generac Portable Products
service facility.
3. Check and repair.
4. Connect another device that is in
good condition.
Engine runs good at no-
load but “bogs” down"
when loads are connected.
1. Short circuit in a connected load.
2. Engine speed is too slow.
3. Generator is overloaded.
4. Shorted generator circuit.
1. Disconnect shorted electrical load.
2. Contact Generac Power Systems
service facility.
3. See “Don't Overload the Generator”
on page 10.
4. Contact Generac Portable Products
service facility.
Engine will not start; or
starts and runs rough.
1. Run/Stop Switch set to “Stop”.
2. Fuel Valve is in the “Off” position.
3. Dirty air cleaner.
4. Out of gasoline.
5. Stale
gasoline.
6. Spark plug wire not connected to
spark plug.
7. Bad spark plug.
8. Water
in
gasoline.
9. Overchoking.
10. Excessively rich fuel mixture.
11. Intake valve stuck open or closed.
12. Engine has lost compression.
13. Failed battery.
1. Set switch to “Run”.
2. Turn the fuel valve to the “On”
position.
3. Clean or replace air cleaner.
4. Fill fuel tank.
5. Drain gas tank; fill with fresh fuel.
6. Connect wire to spark plug.
7. Replace spark plug.
8. Drain gas tank; fill with fresh fuel.
9. Open choke fully and crank engine.
10. Contact Generac Power Systems
service facility.
11. Contact Generac Power Systems
service facility.
12. Contact Generac Power Systems
service facility.
13. Replace battery.
Engine shuts down during
operation.
1. Out of gasoline.
2. Low oil level.
1. Fill fuel tank.
2. Fill crankcase to proper level.
Engine lacks power.
1. Load is too high.
2. Dirty
air
filter.
1. See “Don't Overload the Generator”
on page 10.
2. Replace
air
filter.
Engine “hunts” or falters.
1. Choke is opened too soon.
2. Carburetor is running too rich or too
lean.
1. Move choke to halfway position until
engine runs smoothly.
2. Contact Generac Power Systems
service facility.