![]() On the cns carb, when you choke it, you are actually opening the choke (which is just a brass shaft that slides up & down on the side of the carb inlet.) when you open the choke on a cns carb, it allows more gas to be sucked into the carb to make it run richer for cold start ups. then the choke on this carb works backwards from the n.t. If it's an n.t., there is no air-fuel adjustment screw.just an idle screw. Less air means that it will run rich for cold start ups. The choke plate actually blocks the carb inlet. ![]() ![]() carb you are restricting the amount of air that the carb sucks in. If you have to close the choke, it's telling you that you are getting too much air (making it run too lean). carb, the choke will be a simple, old style plate that opens and closes at the inlet of the carb. Yes the engine is supposed to run with the choke fully off (or open).
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