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1975-76 Models (Leading & Trailing)

  1. Warm engine to normal operating temperature and set idle speed to specification. Connect tachometer to engine.
  2. Connect timing light to leading (top) spark plug on front rotor housing. Start engine and check leading timing. If timing is incorrect, loosen distributor and rotate housing until leading timing is correct.
  3. Connect timing light to trailing (lower) spark plug on front rotor housing. If timing is incorrect, stop engine. Remove distributor cap and rotor. Disconnect primary wire from leading retard side.
  4. Remove screws attaching breaker base plate and external adjusting lever for leading retard side. Remove breaker points and breaker base plate assembly. Slightly loosen leading side breaker base plate screws, turn base plate as required, and tighten screws.
  5. Install leading retard side breaker base plate assembly, rotor, and distributor cap. Check leading and trailing side timing. If timing is incorrect, repeat procedure until both readings are correct.
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