Hi! I am new to this and I have read a lot of useful information on here, but I have still not yet been able to fix my problem. My 2000 Honda Foreman 450S will turn over but not crank. The kill switch is on. The gas is on. The plug has fire and we did replace it with a new plug just in case the plug itself was bad. I also adjusted the air flow/fuel screw on carburetor just in case that would help it crank. It did not. It was cranking for two days after a while of turning over now it will not crank at all. Just turns over only. Can someone please tell me something else that I may try? I am running out of ideas short of replacing the carburetor. Thanks!