Help with tightening dynamo pulley bolt...

[inflaymes]

I've searched all over the web to no avail...

I bought the SRM belt drive and oil pump. I have everything on no problems... Except... I CAN'T  for the life of me get the small pulley to sit on the taper to stop the dynamo from spinning so I can tighten down the pulley sleeved bolt.  This is all I need to do to have bike up and running. I tried using a larger socket and hammering it a bit to seat the pulley... Didn't work. How do you tighten this nut?

Does anyone have any tips or tricks

[Billybream]

Can be real difficult to remove, so suspect they may well be some damage to the spocket itself, check the taper, really is a secure fixing

[inflaymes]

I got the original off pretty easy ... It's putting the new belt drive pulley on and tightening the nut without the dynamo spinning that is the issue.

[Billybream]

Fully appreciate what you are trying to do, as said check for damage on the dynamo taper and thread.
Please see below, these are instructions as received with the belt kit I fitted.
 Place the small pulley on the dynamo shaft. Fit the spring washer and tighten the sleeve nut just a little at this stage, just so the pulleys sits squarely on the taper.
 Slip the belt over the large pulley and rotate the dynamo to allow it to be passed over the small.
 Rotate the dynamo body back to tighten the belt. Correct tension is such that it is easy to twist the belt at the middle of the lower run by about 45 degrees each way.
 Check that the belt is positioned between the pulley flanges (not rubbing one side of
one pulley and the opposite side of the second pulley). Lateral position can be adjusted
by fitting a different thickness of annular cork seal between the dynamo and inner timing cover.
 Complete the tightening of the small pulley sleeve nut. It does not have to be extremely tight for the taper to grip correctly.