Briggs & Stratton 276535, 271172, 270962, CE8069 Dual Circuit Alternator, Test Alternator Output

Test Alternator Output

1.Insert RED test lead (A, Figure 19) into the V Ω receptacle in the meter.

2.Insert BLACK test lead (B) into COM receptacle.

3.Rotate selector to AC Volts position.

4.Attach RED test lead clip to AC output terminal (C).

5.Attach BLACK test lead clip to engine ground.

Figure 19

6.With engine running at 3600 RPM, AC output should be no less than 14 Volts.

•If NO or LOW output is found, replace the stator.

Dual Circuit Alternator

Dual Circuit alternators use a polarized plug with two pins. One pin provides DC current for charging the battery, the second pin is an independent AC circuit for headlights.

Current for lights is available when the engine is running. The output varies, so brightness of the lights changes with engine speed. 12 Volt lights with a total rating of 60 to 100 watts may be used. With lights rated at 70 watts, the voltage rises from 8 Volts @ 2400 RPM to 12 Volts at 3600 RPM. Since the battery is not used for the lights, the lights are available even if the battery is disconnected or removed.

Current for the DC side of the alternator is unregulated and is rated at 3 Amps. The output rises from 2 Amps @ 2400 RPM to 3 Amps @ 3600 RPM.

Test Alternator Output-AC

1.Insert RED test lead (A, Figure 20) into the V Ω receptacle in the meter.

2.Insert BLACK test lead (B) into COM receptacle.

3.Rotate selector to AC Volts position.

4.Attach RED test lead clip to AC output pin (C).

5.Attach BLACK test lead clip to engine ground.

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Figure 20

6.With engine running at 3600 RPM, AC output should be no less than 14 Volts.

•If NO or LOW output is found, replace the stator.

Test Alternator Output-DC

NOTE: The battery MUST be in good condition to perform this test.

1.Insert RED test lead into 10 Amp receptacle in meter.

2.Insert BLACK test lead into COM receptacle in meter.

3.Rotate selector to DC Amps position.

4.Attach RED test lead clip (A, Figure 21) to DC output pin (F) in connector (D).

NOTE: The raised rib on the connector or the RED wire indicates the DC output pin side. The AC pin is not used for the test.

5.Attach BLACK test lead clip (B) to the positive (+) battery terminal.

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