Generac 20kW — Service Procedure

For the Generac 20kW.

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Procedure

1. 8.
2. 9.
3. 10. Connect an accurate AC voltmeter and a frequency meter
4. 11. Let the generator run at full rated load for 20-30 minutes.
5. 12. When testing under load is complete, turn OFF electrical
6. 13. Set the generator's main circuit breaker to its OFF (or OPEN)
7. 14. Let the engine run at no-load for a few minutes.
8. 15. Set the AUTO/OFF/MANUAL switch to OFF. The engine should
9. 2.6
10. 1.
11. 2.
12. 3.
13. 4.
14. 5.
15. 6.
16. 7.
17. 8.

Source: manual:9f84685f-0bec-42e0-a4e9-5c2c50b4b67b.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.