2. Rectifier/Regulator
CHECKING THE RECTIFIER/REGULATOR

1. Check:
    • Charging voltage

      If out of specification -> Replace the rectifier/ regulator.
Charging voltage
+14 VDC at 5,000 RPM/Min
      a. Attach the engine tachometer to the spark plug lead of the front cylinder.

      b. Connect the pocket tester (DC 20 V) to the battery terminals as shown.
Digital tachometer
90890-06760
YU-39951-B

Pocket tester
90890-03112

Analog pocket tester
YU-03112-C
          • Positive tester probe -> positive battery terminal "1"

          • Negative tester probe -> negative battery terminal "2"
      c. Start the engine and operate it run at approximately 5,000 RPM/Min.

      d. Measure the charging voltage.
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