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Old 01-29-2011, 11:49 PM
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roostafish roostafish is offline
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Join Date: Jul 2006
Location: Eugene Oregon
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Good call on the carb cleaner test. It still may not react the way you want it too, so a good visual inspection of the rubber boot on the output of the carburetor is in order. A likely suspect is the left, or ignition side crank seal.

I have had the crank seal on the ignition side fail (on a KTM) and give similar symptoms. If you pull the ignition cover off and it's full of a bunch of crud and rust, it's a sure bet that seal is junk. The good thing is if you haven't damaged the bearings, you can just pull the flywheel and replace the seal with the bike on the stand.
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Mike Sheetz
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What will I be riding next? Christini GG 300?
'15 KTM 300 XC-W
'08 EC 250 (Gone to new happy owner)
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