I would try drilling it right thru with a small drill ( 2-3mm ) and maybe bigger .I have found that with these things and broken bolts/studs that drilling them thru can loosen them a bit . Don't drill to big as you still need some metal for the drift to bear on. You could drill a 5-6mm hole and thread it , then using a few 8mm washers as a spacer on the end of the shaft , thread the bolt in and pull it out...........or maybe a slide hammer

Thanks for replays, I figured I needed to grease for internal of spacer with the oring over the shaft and for clutch drum over shaft, first pic is where I thought to drift the piece back out the way it came, second is where it's at now , I'm going to see if I can get a strong magnet to fit inside shaft and pull it out , I tried a nice new little drill bit on the broken guide but she didn't want to drill at all, don't suppose anyone can tell me if I am trying to drift from the right place,ie the hole in the centre of the first pic

Some reason I can't upload pics right now, but I think the drift hole is behind the little cover with 3 bolts in it just forward of the primary cog

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Here's the pics , I tried really strong magnets but the stick welder got the broken piece out, I lined the start of the internal of shaft with a little every paper to resist spatters there, the thing is whatever's I'm the alternator side doesn't want to go any further and clutch side seems the same with a blockage further in, and that's a very pretty engine build mate, merry Xmas guys

Yeah got the pics round the wrong way

that engine is from a german 907IE owner who's also on this forum. Here's more info about it:
https://translate.google.com/translate? ... motor.html
(Google translation)

I did wonder if the hole went right through on earlier bikes. G's idea is good.

Thanks all I got the broken guide out so I reckon I'm all good to go , thanks all

I assume this picture was taken with the pin still inside?

That blockage is still there after removing my trouble broken guide, is still have a clear run of 50_60mm inside the shaft, so new guide/ control plate should be ok , I hope now a trial run with the new clutch plates, springs,clutch nut fastened and old control plate in place, my concern is will that outside steel plate be a problem being a little proud of the clutch drum,probably other things to look out for too , just stumbling through at the moment , out of the kit I have 2 drive plates and 2 friction plates left out, I have read faqs still confused , help and ideas always appreciated

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Trying to load a better pic of Barnett instructions where I have circled the omitted plates otherwise I have followed the instructions