Briggs & Stratton — To Adjust and Clean Contact Points
Adjustments · 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 a steel file on contact points
- If either or both points are badly pitted or burned, replace both points, Parts Nos. 29888 and 29754
Procedure
- Turn the crankshaft by hand to see if the contact points open and close properly; points must be clean and line up squarely
- To line up points, loosen the contact spring bolt, move the contact spring assembly to line up with the contact screw point, then tighten the contact spring bolt
- To adjust contact spring tension turn the crankshaft until the points are in open position, place a 3/64 inch gauge between the contact spring and the round end of the contact block and tighten the co
- Turn the contact screw to secure .020 inch gap and tighten the locknut against the lockwasher
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- .020 inch contact point gap
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.