Briggs & Stratton — To Replace Armature
Repair & overhaul · magneto
From a Briggs & Stratton service manual — check it applies to your exact model before use.
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Before you start
- Do not use battery compound or tar as it will melt and run over the entire magneto assembly
Procedure
- Remove the armature lead wire from the contact spring and the high tension ignition cable from the secondary terminal loop in the armature
- Unscrew the two armature mounting screws and pry the armature loose with a screwdriver
- Place the dust cover clip under the upper mounting screw and tighten the lower mounting screw
- Solder the ignition cable to the terminal and fill the pocket formed with the flap with hydrolene
- Solder the armature lead wire to the contact spring, replace the dust cover and clip, and tighten the upper armature mounting screw
- Check that an air gap of .002 to .010 inch is maintained between the armature shoes and the flywheel poles
Tools required
- Screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Air gap .002 to .010 inch
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.