Hi Grumpy, the chainsaw has a tapered shaft. I checked out all you have suggested and found, the flywheel is the wrong one or been rounded out due to loose fitting. I thought i was getting it on tight enough and it was fitting properly but last night was checking it out and there is actual movement once fitted on shaft, why i never picked it up earlier i dont know. I found this out as i have 3 of the same chainsaws myself,1 going and 2 for spares, and thought why dont i try a spare flywheel compared to original of saw. No movement using my flywheel, even if not screwed on, it fits very snugly. Should i give it a go using my flywheel , no i'll wait for you to get back to me first.
