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Generac — Se Hee

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

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Procedure

  1. Touch BLACK test lead probe to terminal "B." a. lf meter "Beeps” once, diode is OK. b. If meter makes a continuous tone, diode is defective (shorted). Replace ground harness. c. If meter displays “OL," diode is defective (open). Replace ground harness.
  2. Now repeat test for terminal "C." Results must be the same. See Diode Failure Diagnosis on page 5.

Source: manual:0C8221.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.