Joe, if you can mull over another one, I am having the nearly identical problem with my 55 Rancher as Ward. Symptoms are like #1 - starts after one pull on choke, fires up on high right away, but after letting up on the throttle she won't idle. Plug dry, I have the limiters on my adjusters, and have tried every conceivable position and combination. Anyone know if my saw has the impulse hose? It doesn't look familiar and I just had everything out of there and cleaned it out completely. New muffler screen, new air filter, new fuel filter. The only thing I didn't replace that I wanted to was the fuel line, but the hose they sent me is shorter than what's on there now so I didn't try. I would say the only thing my saw did different than Ward's is that when it first starts it goes right to running high and I have to bump the throttle to get it to idle down, and then it quits. Do I have something sticking there in the throttle linkage as well possibly? And I second Ward's praise of everyone here, you've all been so helpful and I appreciate it and am learning lots.