I've decided that this is the weekend that I am doing my gearbox swap.

I thought I would get a bit of preparation done before I started to strip my bike and make it unusable. First job was to remove the flywheel from one of my spare gearboxes to put on the gearbox I am using.

I made my puller from 3 pieces of 8mm screwed rod, a fabricated metal plate with 3 holes drilled in it, 3 x 8mm nuts and washers.

I set up the puller and started to tighten the nuts, then I tightened them a bit more and a bit more.........



........and a bit more......and so on.

I tightened them so much that the metal plate I made was bending and there was no more room to tighten it any more.

It was at this point I opted for my weapon of choice in a situation like this.....

......Mr Hammer!!!

After a few well placed firm taps in the centre of the plate the flywheel finally parted company with the crankshaft!!!

I thought that it would be much easier than it was but Yamaha put these flywheels on for keeps - if you have to do this yourself don't expect it to be easy!!!

Tom

there should be a section, if not a whole website for how to make your own tools for this, for example a Ducati alternator cover puller, the tool recommended by the workshop manual cost 95 quid, the home-made bodge cost 50p and took 10 minutes to make.... there must be a ton of examples like these

Too damn right!!! - why waste money???

Tom