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I’m not convinced my choke has ever worked correctly on my ‘80 CM200. When warm, the bike we usually start on the first kick and idle nicely. When cold, it will start right up on full choke but die if the choke isn’t pushed in some. While warming up, moving the choke in or out doesn’t seem to have any effect on rpms other than stalling when fully pulled out. Slow and choppy idle until the bike warms up. Once warm, idles and runs good. Carb just cleaned again, mix screw turned out just over 1.5 turns. Any thoughts?
 

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To adjust the mixture you set idle to specified rpm, then adjust the mixture screw to achieve highest rpm, then re-set the rpm.

As you describe it, your choke appears to be working normally with one exception. Typically there's a linkage that slightly opens the throttle as the choke closes thus providing increased idle rpm while the engine warms up. Adjustment methods vary but on of the 200 experts will likely be along soon to guide you.
 
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