Darn thing smokes like crazy when started again after being run for awhile. If try to idle, will kill after 30 sec to 1 min.Purrs like akitten anywhere above 1200 rpm. Starts extremesly hard after spontaneous kills, though. Also, this 2 cycle has 2 cylinders and one carb. Carb has idle adjust screw and one other screw on side (mixture screw). Beside this screw is threaded hole(looks to be for another screw but none is present. Could this be vent of is screw missing? Often when i pump up bulb, fuel runs out though this hole. What,s the scoop. Is float screwy? Needle and seat? If so how culd that be when carb has never been off. Also, how far should micture screw be backed off from fully seated. Thanks in advance. Rango
