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RMX 450 Z problem

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First, I apologize for my English, I'm from Spain and I'm still learning.

Now ...

A friend has a new rmx450z, has a trouble with this bike. After a while riding on the rocks, when remove the throttle, the engine dies, it turns off.

A few days ago, riding downhill, it happened again and he was rolling on the ground.

Sometimes it can be dangerous.

Has been revised clutch, EFI mapping, different exhausts, cherry bomb ... and the problem continues.

I know other rmx owners and they have the same problem.

We do not know what else to do.

Does anyone of you have this problem?

Someone knows how to solve it?

I've been searching for other posts about this problem but havent found information.

Thank you very much.

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Try turning the idle up from the idle screw, maybe that will help (the idle is supposed to be around 2000 rpm)

+1

Works the same way for the RMZ owners too.

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+1

Works the same way for the RMZ owners too.

+1

+ After 1200 Km bike is broke in :busted:

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The idle is up now, I dont remember how many rpms but my friend has been turned up and down many times.

Thanks.

The bike runs great in open ways, in the woods and mx track, but when you're riding on hard zone, on the rocks, "trials" zone?, (dont know how do you say it in english) after some time of intense work for throttle and clutch (and for the rider, of course! :busted:), when you turn back the throttle, sometimes the engine falls down... ¿thats bog or stall?

Does anyone know if mounting a heavier flywheel can solve it?

does exists this stuff for rmx 450?

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Idle up and more kilometers (12/1500) and stalling stopped.

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