I'm expecting there will be something like a couple of grubscrews in the bottom of the pulleys, Bushy. Once you find them it will be easy except that of course you won't be able to use a gear puller, because you'd be pulling and pushing against the same part. Be sure and use Penetrene, with hours of soak time - preferably with several applications. Then hopefully you'll be able to get it off with a pair of levers against the crankcase - but put some plywood in between the levers and the crankcase, of course. If you have to use a slide hammer, and it is hard to get off, you may damage the lower bearing flange inside the crankcase.
