Sprocket puller

Hi George, I suspect you need a suitably modified 2 leg puller and muscle. I have a Pukka vintage Norton puller for my 99 and it only just did the job.

If the job is similar to a Dommy the sprocket is on a taper and needs a lot of "pull" . The Norton puller has feet that have been shaped to get between the teeth ,the puller arms are a straight pull ,not angled, the center bolt is large diameter with a very fine thread. All this makes for a powerfull tool.It still needed a good "whack" with a hammer to break the taper which released with a BANG!. Apparently some almost just fall off. Not in my world. Try Russel Motors for one.Someone opened up a packing case full years ago.

I borrowed a mate's generic 'universal' puller when working on my Commando, and frankly it wasn't worth a carrot!

Don't be shy with the blow torch either if it's been on there a while!

Bought a great universal one from Halfords, silver line I think, concerts from two to three keg. Worked great and if there had been any issues I'd have taken it straight back.

Sorry it was Laser brand -

That sounded almost too easy, you want the taper to be transmitting the drive - not the key. Before re-assembling I would suggest lapping the sprocket to the shaft using fine grinding paste. The aim is to achieve a uniform dull grey colour all the way round, both on the shaft and inside the sprocket, indicating that the internal & external tapers match perfectly. You will need the puller next time! Make sure you clean off all the grinding paste when you have finished lapping. Apologies if this is teaching grannies to suck eggs.

Ian McD

PS I use a Sykes Pickavant 860 series 2 leg thin jaw gear puller, but I think that is more expensive than the options you have already looked at (although it fits without any help from an angle grinder)

Spend the money on the right tool and chances are you will never use it. Bit like insurance!.