I'm going to assume you have either a QA-36A or QA-42A. Either way, here's the belt you need: IH-55053-C1 You can get this from any Cub Cadet dealer. Don't bother with any other belt; they won't hold up.
There are no "shear pins" in the thrower, or at least mine don't have any...are you talking about spirol pins?
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