Coleman mini bike idle way to high

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R3mot3

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I just got two of them yesterday bt200x. They worked fine at first but after about an hour of riding both me and my wife noticed they would always be pulling forward, hers at somewhat alarming speeds. Applying the brake would make it bog out of course. I see there is no idle screw ...any ideas what is happening and why? ...even better, how to fix it.
 

R3mot3

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That was the first thing I tried. It’s like it either stalls from not enough to idle ...or it’s enough to engage the clutch to either stall ...or start moving. Why is something so simple such a hard thing to achieve after decades and decades of making engines, lol. FFS why is there no set screw 🤣
 

R3mot3

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I did a carb clean and got it into a bearable state. My one bike works fine now, but the other one stalls on take off... unless I come onto it very slowly.

another issue is that the acceleration seems almost all the way from the get go... then the engine only begins to sound more comfortable with it as I increase throttle. Is it just me or are these Coleman bt200x bikes not very nuanced in regards to acceleration ...like AT ALL. Then when I stop it idles for a few seconds then dies. Starting to regret buying these.
 

R3mot3

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I did a carb clean and got it into a bearable state. My one bike works fine now, but the other one stalls on take off... unless I come onto it very slowly.

another issue is that the acceleration seems almost all the way from the get go... then the engine only begins to sound more comfortable with it as I increase throttle. Is it just me or are these Coleman bt200x bikes not very nuanced in regards to acceleration ...like AT ALL. Then when I stop it idles for a few seconds then dies. Starting to regret buying these.
NEW ...by the way 😒
 

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