Starter Switch Burnouts

[Tom Wesenberg]

Three starter switches were brought to the clinic meeting tonight. Two had burn marks where the switch had shorted, and the third one shorted when the insulating t part failed. This is the small t part between the round push rod and copper strap. This one also has solder from the cable terminal when the end melted off. Make sure the insulating board inside the switch is in good shape and large enough to cover the sides from the copper strap.

This one actually looks like it failed from the outside of the switch, which means the cable end wasn't insulated right, or it shorted to the case for some reason.

[BILL WILLIAMSON]

"Welding" of the contacts in a "stuck" position, is often caused by an OLD pooped out battery !
Bill W.

[mshmodela]

I took my switch off last year when I removed my starter and at that time I cleaned contacts --not too bad really... I wonder if anyone has had issues with moisture in them since the switch is exposed...

[BILL WILLIAMSON]

I "feel" that a good FIRM push on the starter button, eliminates some possible arcing & "welding" the contacts together.
Bill Firm

[Mitch//pa]

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Originally Posted by BILL WILLIAMSON

"Welding" of the contacts in a "stuck" position, is often caused by an OLD pooped out battery !
Bill W.

Your Right on there, that is a major cause