Question about 2005 Qianjiang QJ100-2

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Scooter Open Throttle (?)

I have a 4-stroke chinese 150cc bike, it's about 3 months old. My problem is that yesterday, when I came home from work; the throttle (?) or rpm on the tachometer stayed at around 5000rpm. Even while stopped.

It sat overnight and again it was in the same condition this morning when I started it.What do you think the problem is?

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Assuming the bike is not fuel injected, you either have a stuck slide, a throttle cable out of place such that it is lifting the slide or a really bad manifold air leak. Tighten the clamps holding the carb to the cylinder and the bolts holding the manifold to the cylinder. That should eliminate any air leaks. Inspect the throttle cable, especially at the ends where it connects. Remove the air filter and look into the center of the carb. Does the slide in the throat of the carb open and close properly? Below is a generic carburetor. Your carb will be similar.

Scooter Open Throttle (?) - 3e4b781.gif

Posted on Jun 30, 2009

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My 150cc Gator scooter was sitting in storage for a year. The problem I am having is the scooter starts after a new battery of course and it idles perfect. My hand throttle is stuck and will not move anywhere. It idles but I can't give it gas. Just stuck like it is frozen locked. What do I do? Thanks

Posted on Dec 08, 2009

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Posted on Jan 02, 2017

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