I'm fixing up a 1987 kdx200 c2 and I was wondering if a 125 flywheel will work properly on a 200? O ya and what does the woodruff key do? As you can guess I dont have much mechanical experience. Any help will be greatly appreciated.
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Re: 1987 kdx fly wheel
The 125 uses an internal flywheel, if the flywheel you are asking about looks the same, meaning the magnets will be in the same location when you look at the timing marks on the flywheel. The woodruff key is used to make sure you put the flywheel on in the same place after removal. The 1/2 degree difference in the shaft tapers, (7degrees on crankshaft, 6.5 degrees on the flywheel), is what holds the flywheel in place.
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first you need to get a fly wheel puller. then remove the nut in the middle of fly wheel,insert fly wheel puller,reverce thread,tighten pin and it will pop off fly wheel.when you put it back on remember to line up "woodruff key",its a little notch on fly wheel whitch lines up with a ridge on cam shaft. if you cant fix your problem and you have spark its probobly your coil and condencer.
If you have gas coming out of the overflow tube, you need to make sure the float valve is shutting the gas off properly. The float height would have to be awfully high to cause gas to come out the overflow. You might be able to do it on the bike but it's a lot easier to do off the bike. Pull out the float valve and inspect the tip. Make sure it is smooth with no evident nicks or deep grooves.