My bike has never had a ski slope fitted for some reason. Anyway, I have now purchased one (a used genuine BSA item). The problem is the bolt through the upper rear engine plate (p/n 42-4474) seems to be a little to short when the extra width of the ski slope is taken into consideration. I can get the nut on, and it will do up (just) if I omit the spring washer, even then the nut is about two threads to long if that makes sense. So my question is what should the over all length of the bolt be? I want to check this out before I buy a new longer bolt, oh, and what thread is it supposed to be. I cannot measure the length of the bolt that is currently fitted due lack of access while it is still in place, and just to make things interesting the PO fitted the bolt in with the head facing toward the chain case, so that is going to have to come off to facilitate the bolts removal.
John