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Dirt Bike Brands - Other
1985 cr 250 top end rebuild...very little power
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[QUOTE="84cr125, post: 1187881, member: 76755"] Actually as you remove the right side case the valve will close because the water pump govenernor wil now longer be pushing on the linkage system. When the right-hand crankcase cover is installed, the ATAC govenor rocker arm will push on the lower cam which in turn opens the butterfly valve. Adjustment in the butterfly valve is only nessary if the butterfly valve is not completely CLOSED when its not saposed to be (Wide open throttle). If the butterfly valve is more than 45 degrees or more drom the open position, you will have to properly reinstall the exhaust manifold. You can do a simple test to see if the valve is operating correctly, just take off the muffler but leave the manifold on, leave the right-hand crankcase cover on and stick 2 fingers down the manifold. You will feel the butterfly valve and it should be totally vertical. If you want, i made an offer before ive got the manual and a scanner. Just give me a PM with your email address and ill do it for ya gladly. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
1985 cr 250 top end rebuild...very little power
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