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2009 290 Sherco Reving Up


evo boy
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Hello all my mate need some help. He has a 2009 290 Sherco. When you start it up all it does is rev its self sky high. Throttle cable fine carbs been removed and clean including jets. We just don't know what's up with it. Hope someone has some ideas.

Thanks

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I just experienced they same issue. I put the bike away over the winter and treated the gas with stabil, as I always have.

I started the bike last week and it didn't want to die without the choke. Common issue - I cleaned out the carb (no thanks to Stabil) and put things back together.

Bam, first kick and she was purring. I took off the choke and the bike went from idle to high revs. I adjusted the idle screw and it eventually came down, but wanted to die. I adjusted the idle screw to bring the idle up a bit. It was idling well, then without warning began to rev like crazy!

Also, if it is idling and you hit the throttle, it will stay up on revs for a very long time.

Sound like an air leak somewhere?

Thanks!

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I just experienced they same issue. I put the bike away over the winter and treated the gas with stabil, as I always have.

I started the bike last week and it didn't want to die without the choke. Common issue - I cleaned out the carb (no thanks to Stabil) and put things back together.

Bam, first kick and she was purring. I took off the choke and the bike went from idle to high revs. I adjusted the idle screw and it eventually came down, but wanted to die. I adjusted the idle screw to bring the idle up a bit. It was idling well, then without warning began to rev like crazy!

Also, if it is idling and you hit the throttle, it will stay up on revs for a very long time.

Sound like an air leak somewhere?

Thanks!

Same is happening on my beta

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