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Originally Posted by eddyble
AFAIK choke enriches the fuel/air mixture which makes the engine rev higher (i'm sure there is much more to it, but those are the effects that i can see)
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The way I understand it, our choke is not a typical choke like you would find in a car. It is basically a fuel enrichment circuit or valve and when engaged, simply supplies more fuel. I could be wrong but I believe it only works when the throttle is closed. Start it up with the choke open and gradually close it once you notice that your RPMs are up when the bike is stationary, like when stopped at a light. It should not take more than a few minutes.
Wiki Carburetor Choke
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Some carburetors do not have a choke but instead use a mixture enrichment circuit, or enrichener. Typically used on small engines, notably motorcycles, enricheners work by opening a secondary fuel circuit below the throttle valves. This circuit works exactly like the idle circuit, and when engaged it simply supplies extra fuel when the throttle is closed.
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