Question about 2003 Yamaha YZ 250
Yes, the flywheel can be removed without a puller. It isn't usually very easy but once the center nut is removed, there is nothing holding the wheel in place other than the remaining pressure of the center nut and whatever "rust bonding" may have occurred. Get a heavy plastic hammer, no steel hammers, and a propane torch. Heat up the wheel center for a minute or so. The expansion/contraction thing will help break the wheel free. Strike all around the outside of the wheel at an outward angle. Give good strong strikes. Sooner or later the wheel will break free. Personally, this could be quick or it could take an hour. You never know. I would get a puller and go the easy route. Hey, you can use it on this bike and others that you will have in the future. Mine is 45 years old and still in use.
Posted on Jun 21, 2009
I need to remove my flyweel from yamaha waverunner 1998 ,but it seem to hard anybody can help me out ,maybe someone can send a video please thanks max
Posted on Apr 22, 2010
It is possible but not recommended. Personally i wouldn't use a a torch to heat it or hammer no matter if it's plastic,rubber,or metal.You have to remember the flywheel is magnetized and the last thing you want to do is crack the inside and throw off the balance or the magnetization of it and take the chance of losing spark because you didn't want to spend the 12 bucks to buy the correct tool from your local yamaha shop. Although in theory the heat idea does work, as i stated i wouldn't heat mine up not even for a minute.The taper on the crank is pretty short before it meets the case halves (rubber crank seal) and heat and rubber doesn't go together well.
I've used a 3 jaw gear puller before when i was absolutely in need to get it off and didn't have a puller.I wasn't comfortable at all doing it but i took the 50/50 chance of bending it all to heck.
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
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