Briggs & Stratton CE8069, 271172, 270962, 276535, 273521 manual VoltAC Alternator, Test Diode

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

NOTE: Negative (-) battery terminal must be grounded.

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Figure 17

6.With engine running at 3600 RPM, output should be between 2 to 4 Amps DC.

•Output will vary with battery voltage. If battery voltage is at its maximum, output will be approximately 2 Amps.

7.If no or low output is found, test diode.

Test Diode

In the Diode Test position, the meter will display forward voltage drop across the diode(s). If voltage drop is less than 0.7 volts, meter will “Beep” once as well as display voltage drop. A continuous tone indicates continuity (shorted diode). An incomplete circuit (open diode) will be displayed as “OL.”

1.Insert RED test lead (A, Figure 18) into the V Ω receptacle and set the rotary switch to Diode position.

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

3.Attach RED test lead clip to (C) and Black test lead clip to point (D). (It may be necessary to pierce wire with a pin as shown.)

Figure 18

•If meter “Beeps” once, diode is OK.

•If meter makes a continuous tone, diode is defective (shorted).

•If meter displays “OL,” proceed to Step 4.

4.Reverse test leads.

•If meter “Beeps” once, diode is installed backwards.

•If meter still displays “OL,” diode is defective (open).

5.If diode tests OK, replace stator.

NOTE: Service replacement diode harnesses are available. Use Rosin Core solder when installing new harness. Use shrink tubing or tape for all connections. Do not use crimp connectors.

14-Volt AC Alternator

The AC alternator provides current for headlights only. Current for the lights is available when the engine is running. To check, use 12 Volt lights with a total rating of 60-100 watts. Alternator output varies with engine speed. With lights rated at 70 watts, the voltage rises from 8 Volts @ 2400 RPM to 12 Volts @ 3600 RPM. The lights should become brighter as the engine speed increases.

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