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Output Test

  1. Ensure connections at battery, generator, and starter are clean and tight. Ensure generator, engine and body are properly grounded.
  2. Ensure generator drive belt is tight and in good condition. Connect charging system tester according to manufacturer's instructions. Connect voltmeter leads to battery terminals.
  3. Start and operate engine at 3000 RPM. Adjust carbon pile on tester to obtain maximum generator output. DO NOT allow voltage to drop to less than 12.6 volts.
  4. Generator output should equal generator rated output. If reading is 16-20 amps less than generator rating, replace regulator and retest. If output is still low, repair or replace generator.
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