Generac XG6500 troubleshooting: 8 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Generac XG6500 — full specs, parts & maintenance.
| Symptom | Cause | Remedy |
|---|---|---|
| Engine is running, but no AC output is available. | 1. Circuit breaker is open. 2. Poor connection or defective cord set. 3. Connected device is bad. 4. Fault in generator. 5. GFCI trips the 20 Amp outlet. | 1. Reset circuit breaker. 2. Check and repair. 3. Connect another device that is in good condition. 4. Contact Authorized Service Facility. 5. Repair the 'short' and reset the GFCI. |
| Engine runs good but bogs down when loads are connected. | 1. Short circuit in a connected load. 2. Generator is overloaded. 3. Engine speed is too slow. 4. Shorted generator circuit. | 1. Disconnect shorted electrical load. 2. See 'Don't Overload the Generator'. 3. Contact Authorized Service Facility. 4. Contact Authorized Service Facility. |
| Engine will not crank. | Battery weak or dead. | 1. Recharge or replace battery (see 'No Battery Charger DC output' at bottom of guide). 2. Start engine manually using recoil starter. |
| Engine will not start; or starts and runs rough. | 1. Fuel shut-off is OFF. 2. Dirty air filter. 3. Out of gasoline. 4. Stale gasoline. 5. Spark plug wire not connected to spark plug. 6. Bad spark plug. 7. Water in gasoline. 8. Over-choking. 9. Low oil level. 10. Excessive rich fuel mixture. 11. Intake valve stuck open or closed. 12. Engine has lost compression. | 1. Turn Fuel shut-off ON. 2. Clean or replace air filter. 3. Fill fuel tank. 4. Drain fuel tank and fill with fresh fuel. 5. Connect wire to spark plug. 6. Replace spark plug. 7. Drain fuel tank; fill with fresh fuel. 8. Put choke knob to No Choke position. 9. Fill crankcase to proper level. 10. Contact Authorized Service Facility. 11. Contact Authorized Service Facility. 12. Contact Authorized Service Facility. |
| Engine shuts down during operation. | 1. Out of gasoline. 2. Low oil level. 3. Fault in engine. | 1. Fill fuel tank. 2. Fill crankcase to proper level. 3. Contact Authorized Service Facility. |
| Engine lacks power. | 1. Load is too high. 2. Dirty air filter. 3. Engine needs to be serviced. | 1. See 'Don't Overload the Generator'. 2. Replace air filter. 3. Contact Authorized Service Facility. |
| 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 Authorized Service Facility. |
| No Battery Charger DC output. | 1. Battery posts are corroded. 2. Battery cable is bad. 3. Battery is defective. 4. Receptacle is bad. 5. Battery Charger in-line fuse (1.5A) melted open. | 1. Clean battery posts. 2. Replace cable. 3. Check battery condition; replace if defective. 4. Contact Authorized Service Facility. 5. Replace fuse with identical 1.5A replacement fuse only (located inside control panel). |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: 1. Circuit breaker is open. 2. Poor connection or defective cord set. 3. Connected device is bad. 4. Fault in generator. 5. GFCI trips the 20 Amp outlet.. See the table for the matching fixes.
Documented causes: 1. Short circuit in a connected load. 2. Generator is overloaded. 3. Engine speed is too slow. 4. Shorted generator circuit.. See the table for the matching fixes.
Documented causes: Battery weak or dead.. See the table for the matching fixes.