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2000 summit 700 mxz

S
Sep 12, 2014
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I am having difficulty getting my 700 summit to accelerate from idle.
On slow accel it will rev up to 1/2 and then it wants to bog down. Carbs have been cleaned. Rave valves cleaned. Not sticking. Had the Pistons and all gaskets and seals replaced. Not sure if the throttle cables are properly synched
Or if mixtures are set properly.
The same issues were there after the last ride last spring.
When on a small uphill climb machine backfired and then it lost 50% of its power. Unable to find the.cause.
Any ideas????
 
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