Home made fly wheel puller
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.....
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!!!