Having removed the cylinder for regrinding, I'm currently doing a partial refurbishment of the drive system on my Atco Commodore B17. I've noticed that there's quite a bit of end float on the clutch boss/sprocket when installed (item 11 on attached diagram) and have measured this at about 30 thou (imperial). The clearance looks to be determined by the tufnol washer (item 13) so there doesn't appear to be any obvious way of adjusting it.
So, my question is firstly what level of end float would be acceptable here, is 30 thou too much? Secondly, if it is too much, does anyone have any suggestions on how to reduce it?
I'm planning on replacing the chains and clutch (I have a used/good replacement) and generally cleaning/lubricating. Any other advice on work to do while I have things apart would be appreciated.
Thanks in advance