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Home›Repair guides›Test 18: Perform AVR Bypass Tests

Briggs & Stratton — Test 18: Perform AVR Bypass Tests

For these Briggs & Stratton models: 10 kW, 8 kW.

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Procedure

  1. 27. Press OFF on control panel and remove 15 Amp fuse.
  2. 28. Set generator circuit breaker to the OFF (Open) position.
  3. 29. See Figure C14. Set Digital Multimeter to read AC voltage.
  4. 30. Connect jumper wire from Wire 4 to battery positive (+) post. Connect another jumper wire from
  5. 31. Install 15 Amp fuse in control panel.
  6. 32. Connect one meter test lead to Wire 2, and the other to Wire 6.
  7. 33. Press and hold MANUAL on control panel to start engine.
  8. 34. Measure AC voltage across Wire 2 and Wire 6. Referencing the table below, write down the value
  9. 35. Press OFF on control panel.
  10. 36. Does unit have half wave or full wave AVR?
  11. A. Half Wave AVR- Move to step 37.
  12. B. Full Wave AVR- Move to step 38.
  13. 37. Half Wave AVR. Proceed as follows:
  14. A. Leaving battery jumper wires connected, connect one meter test lead to Wire 11A and the other
  15. B. Press and hold MANUAL on control panel to start engine.
  16. C. Measure AC voltage across Wire 11A and Wire 22A. Referencing the table below, write down
  17. D. Press OFF on control panel.
  18. 38. Full Wave AVR. Proceed as follows:
  19. A. See Figure C15. Leaving battery jumper wires connected, connect one meter test lead to Wire
  20. B. Press and hold MANUAL on control panel to start engine.

Source: manual:Briggs_Air-CooledRepairManual80019677.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.