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ratrod

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  1. ratrod

    Engine type

    ratrod replied to ratrod's post in a topic in Yamaha Workshop
    Yeah I got the engine number but i not sure how to break it down to what numbers mean what.
  2. ratrod

    Engine type

    ratrod posted a post in a topic in Yamaha Workshop
    Hey Iam new here trying to get some help. I built a ratrod bike from parts laying around. I found a motor laying around I do know it is a yamaha 400 but I dont know what year or exact model. How do I figure this out. Any help please so i know what engine to buy parts for. It runs now thank god.