Hi Mike, I think I have a flywheel for you. Marlin sent it to me with the M52B28TU (which is till sitting in my store) so I may also have a starter motor! No idea where the flywheel came from as the engine was an automatic and I got a mix of odds and sods from them but it should be compatible with the M52! Drop me a message if you are still needing these bits and I will give you a call!
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