Vintage BSA B31 Service Notes


High Resolution article that covers both 350 & 500 BSA Models.


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This 8 Page, High Resolution PDF absolutely jam packed with just about everything you need to know to overhaul BSA’s popular 350 single. It’s also full of handy tips like making sure you fit the magneto straps before you assemble the crankcases. Always good to know as taking cases apart after you’ve applied the sealant is a total pain in the ass. And not something you want to make a habit of. Even if you think you know everything there is to know about these cintage BSA motors you’re sure to learn at least one more thing from this article.

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