Hi Adrian, just had a look at your dynamo drive pictures- Look Out!- that looks more like GORRILLASNOT!!!!!!
Regarding the spacer `twixt inner chaincase and frame (47-4792), I have only found one parts supplier who lists it and that`s Draganfly- but they cross reference it as a 5/16 plain washer!!!!!- I suspect the "gap" twixt case/frame will vary bike to bike, hence it may be washers as required, or perhaps none at all-certainly the gap on my bike initially looks to be between nothing and one washer here. Perhps BSA were somewhat grandly describing it as a spacer, when all it ever was, was a washer or two!
My advice would be thus: assuming engine crankcase is correctly bolted in, all faces clean and undamaged and nothing distorted,the spacer plate 42-7518 should be sandwiched between two gaskets (42-7509), and the inner case placed over them onto the crankcase spigot and bolted up using the two bolts 42-7516, AND all three forward screws 42-7517(?) using suitable spacers to mimic the outer chaincase cover.This will prevent any tendency for the inner case to tilt, and should, when all nipped up, leave the inner ch/case in its natural position.You should now be able to see the true gap between bottom rear end of casing/frame plate for "shimming" with washers as req. Correctly done, you should be able to tighten the bolt 64-6054 without straining or distorting the case.Thats how I see it, but I`m new to this so if anybody knows better,shout up!! HTH, Bob.
