I have a dynamark snow mover, model #5352-0000 Serial # 166371. Where can I find a replacement key, My father lost his. We live in St Louis Mo.

From the manufacturer or an authorized dealer, as a staring point. Also, have you discussed with a good locksmith. The locksmith may have some suggestions on how to best approach this and/or may have a universal key/lock that would work. Good luck.

Hi,
There are only a couple of companies who ever made the switches. Often snowthrowers use strange switches because of the use of 120V starters. If you know what it looks like you might use a search engine, or check eBay.
Peace,
Clarke