Bace line carb settings hope this helps
The adjustment on the bottom of the float bowl is the main jet. Adjust this one for high speed. The one on the side is your low speed adjustment. The one on top is your idle speed adjustment. Adjust your main jet at full throttle adjust it by ear till the motor smooths out. The low speed adjust it just off of idle. I always adjust by the sound to were the motor sounds the best. Your lucky newer engines don't have these adjustments.
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You probably will not believe this ,,,but the automatic oil shutdown switch is acting up ,,,replace that and you will no problem. Had many similar instances and that was the problem,,,its found just about where the oil plug is on the SIDE of the engine where you check the oil level,,most have two places you can check ,,,most of the time if you are looking at the pull cord from the front of the engine,,its on the right side just above the oil plug,,its a little gold look box with i think three wires going into it ,,,if you have to you can just unplug the wires and **** them together and that WILL take care of the problem,,,the oil sensor is malfunctioning and causing it to backfire and not run properly so that you will get out and check to see whats up,,,,thats how they act!!
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