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Preliminary Checks

  1. Ensure battery is fully charged and alternator drive belt is properly adjusted. Never disconnect battery, alternator or regulator with engine running.
  2. DO NOT ground field terminal "EX". This terminal is connected to the voltage regulator by a Green wire. Always disconnect battery if alternator is removed or installed.
Fig 1: Checking Voltage Between Stator Windings & Ground Insert positive probe through ventilation hole.
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