I have a Homelite 20" chainsaw that is about 6 years old. It will start, but when it does smoke comes out of the exhaust for about 30 seconds or more before clearing off. Once running it will run continuously just fine as long as you have your finger on the throttle. Take your finger off the throttle and it stops immediately. So, it won't idle. Then if you want to start it again, it won't start unless you have your finger on the throttle while pulling the cord, and I know that you should be able to start it without doing that. I've used the saw for well over a half hour, cutting wood, and doing my work, but I was just real careful to not take my finger off the throttle.
Can anyone give me some idea as to what I can do to fix or service my saw?