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Generac — Testing, cleaning and drying

For these Generac models: 13/13 kW, 15/16/18 kW, 15A, 6/7 kW, 9/10 kW, GT-990.

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Procedure

  1. Insert a large paper clip into Pin Location No. 1 (Wire
  2. Repeat Step 4 at Pin Location 3 (Wire 6) and Stator
  3. Insert a large paper clip into Pin Location 1 (Wire 77).
  4. Connect the red tester lead to the positive (+) slip ring
  5. Connect the black tester probe to a clean frame ground,
  6. Turn the tester switch OFF.
  7. Plug the tester into a 120 volts AC wall socket and set
  8. Turn the tester switch “On” and make sure the pilot light
  9. Observe the breakdown lamp, then turn the tester switch

Source: manual:Generac Diagnostic Repair Manual 0G4338.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.