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Hi everyone. Having just purchased a XP Ltd '99 that was rebuilt 2 years ago and has sat around ever since, I'm having a few problems. It ran fine on the lake for a hour before it started bogging down between 2.5k and 4k revs. Came to the conclusion that the fuel lines/carburetor was blocked so I pulled the carby apart and filters were all blocked.

Cleaned the carby out and put it back together. However I now have another problem. It seems to run ok (out of the water), but if I rev it past 4000rpm it takes on a life of it's own and revs way past the rev limiter (over 8000rpm) and you can't stop it unless you turn the fuel off, pretty scary! If you keep revs under 4000rpm it seems to be ok.

So my question is, what did I screw up when I put the carburetor back together? Something to do with the main jet? Thanks!!
 

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re wide open throttle

sounds like the throttle cable is sticking wide open for some reason check your return springs on carbs and see if they have the proper tention to close the butterflys
 
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