B. Test Procedure Using A VAT-40 or Equivalent Tester

1. Connect the Green Clamp-on Amps Pickup around the battery ground cable. Connect the NEGATIVE LOAD LEAD to the ground (-) terminal of the battery. Connect the POSITIVE LOAD LEAD to the positive (+) terminal of the battery.

2. Set the TEST SELECTOR to the # 2 CHARGING position.

3. Turn the ignition switch to the ON position and read the rate of discharge on the Blue Ammeter Scale.

4. Start the engine and adjust the speed to 2500 RPM.

5. Adjust the LOAD INCREASE control slowly as required to obtain the highest reading on the Blue Ammeter scale. Do not allow the voltage to drop below 12 volts.

NOTE:
For charging Systems rated above 100A, use the # 1 STARTING position and read the Red 0-500A scale.

6. Rotate LOAD INCREASE control to OFF and shut off the engine.

7. Add the ammeter readings from step 3 and 5 for the total generator output. Compare this number to the normal generator output rating found on the housing of the generator.

NOTE:
If the output from the generator is within 10% of the specifications (amperage), the generator passes this test. If not, replace the generator.