Quote Originally Posted by MudRunnerTD View Post
Your front pulley looks like a taper with a left hand thread nut. Clean both tapers and give it a tap when it's back on and tighten the nut. Do you have the nut? If not it should be relatively easy to find one at a specialist bolt or tool store.
Yeah the nut is long gone, had the thing for maybe 15years and the pulley has never slipped too. I rang a few bolt and tool mobs locally and no one is willing to help. I'll just weld it on.