Briggs & Stratton — Starter Current Draw Test
Testing & diagnosis · Starter system
From a Briggs & Stratton service manual — check it applies to your exact model before use.
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Before you start
- DO NOT clamp starter housing in a vise or field windings or magnets may be damaged.
Procedure
- Install DC shunt on the negative (-) battery terminal; all connections clean and tight.
- Attach RED meter test lead to RED post terminal on shunt and BLACK lead to BLACK post terminal.
- To prevent engine starting, remove spark plug wires from spark plugs; leave spark plugs installed.
- Activate starter and allow 3 seconds for meter reading to stabilize.
- Current draw should not exceed 80 amps DC.
- If exceeded, remove starter and perform No Load starter current draw test: clamp starter mounting bracket in a vise.
- No load current draw should not exceed 50 amps DC; if exceeded, replace starter.
Tools required
- Digital multimeter Tool #19390 Amazon
- DC shunt Tool #19468 Amazon
- Battery cables with alligator clips Amazon
- Jumper wire Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Battery voltage must not be below 11.7 volts
- Engine temperature at least 21 degrees C (70 degrees F)
Source: Briggs & Stratton service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.