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Generator No Load Test

  1. Switch the battery tester to the voltmeter function.
  2. Connect the voltmeter positive lead to the generator B+ output terminal, circuit (Yellow/White wire) and the negative lead to ground.
  3. Turn all electrical accessories off.
  4. With the engine running at 2000 RPM, check the generator output voltage. The voltage should be 13.0-15.0 volts. If voltage is not 13-15 volts, diagnose by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
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