Briggs & Stratton Vanguard Twin Cylinder OHV Liquid-Cooled Engines Repair Manual - PDF DOWNLOAD

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VanguardTM Twin-Cylinder OHV Liquid-Cooled Engine Section 2 - Troubleshooting

STARTER CURRENT DRAW TEST

5. A fully charged 12 volt battery. Testing Starter

IMPORTANT: When making the starter current draw test make sure that all parasitic load is removed from the engine and that engine has the correct viscosity oil. Engine temperature should be at least 70°F (21°C). Make sure battery and solenoid connections are clean and tight.

NOTE: Battery voltage must not be below 11.7 volts.

NOTE: To prevent engine from starting, remove spark plug wires from spark plugs and ground ignition using two Ignition Testers, Tool #19368. Leave spark plugs installed. The starter current draw test will be performed with the meter in the 300mV position. The DC Shunt must be installed on the negative (-) terminal of the battery, Fig. 10.

ATTACH NEGATIVE BATTERY CABLE

Test Equipment The following equipment is required to test current draw of starter, Fig. 9.

3000mV

19464 Fig. 10

19468

1. Attach RED meter test lead to RED post terminal on shunt. BATTERY CABLES

2. Attach BLACK meter test lead terminal on shunt.

to BLACK post

3. Activate starter. a. Allow 3 seconds for meter reading to stabilize. JUMPER WIRES

Fig. 9 1. Digital multi-meter, Tool #19464. 2. DC shunt, Tool #19468. 3. Two battery cables with alligator clips. 4. One jumper wire with alligator clips.

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4. Current draw should not exceed 80 amps DC. If amperage draw exceeds specification, remove starter from engine and perform No Load starter current draw test.


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