Generac — CAUSE

A Generac service procedure — check it applies to your exact model before use.

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Procedure

1. 1. 15 amp fuse blown.
2. 2. Loose or corroded or defective battery cables.
3. 3. Defective starter contactor.
4. 4. Defective starter motor.
5. 5. Dead or Defective Battery.
6. 6. 5 amp fuse blown.
7. 1. Out of fuel.
8. 2. Fuel solenoid (FS) is defective Open Wire #14A from Engine Control circuit board.
9. 4. Spark plugs defective.
10. 5. Door on tank not closed. Engine starts hard, runs rough. Flame arrestor (air cleaner) plugged or damaged.
11. 2. Plugged fuel line.
12. 3. Defective spark plugs.
13. 4. Fuel pressure incorrect.
14. 1. Engine oil level is low.
15. 2. Engine is overheated.
16. 3. Defective Low Oil Pressure Switch
17. 4. Defective Coolant Temperature Switch
18. 5. Defective Control Module circuit board.
19. 6. Coolant Level is Low.
20. 7. Defective Low Coolant Level Switch

Source: manual:0G2966.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.