Briggs & Stratton CE8069, 271172, 270962, 276535, 273521 Test Starter Motor, Test Interlock Switch

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Figure 34

If the pinion gear sticks, clean the helix and gear with a mild solvent and compressed air. If the pinion continues to stick, replace the entire starter drive assembly.

NOTE: Do not oil the pinion gear or helix.

The starter motor clutch is designed to prevent damage from shock loads such as engine backfire. If clutch slips while cranking, replace the entire starter drive assembly.

Test Starter Motor

1.Clamp starter motor test fixture in vise.

2.Remove starter motor from engine and mount to fixture (Figure 35).

NOTICE: Do not clamp motor housing in a vise or strike with a hammer. Most starter motors contain ceramic magnets that can be damaged if the motor housing is hit, deformed, or dented.

3.Set meter to DC Amps position. Connect the black test lead (C), red test lead (D), starter motor, battery (E), and meter as shown in Figure 35.

Figure 35

4.Using Tachometer #19200 (F), spin the starter motor and note RPMs and amperage draw. A starter motor in good condition will be:

•1400 RPM (minimum)

•9 Amps (maximum)

If starter motor is not within specifications, it must be replaced.

Test Interlock Switch

1.Disconnect interlock switch wires from spade terminals on switch.

2.Set meter to Ohms position.

3.Connect meter test leads to two spade terminals of switch (Figure 36). Meter should read no continuity. If switch fails, replace the switch. Push switch lever in until it clicks. Meter should read low resistance. If switch fails, replace the switch.

Figure 36

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