I came home from work a couple of days ago, and someone had gifted me a 8' section of flowering plum. I need to get it cut and sealed ASAP. I have a Stihl ms 170 (I think that's the model), and am having some trouble. The saw starts fine, and idles great. The problem is when I press the throttle, it sputters bogs down and dies. It acts like it just isn't getting enough gas. I described the problem to the dealer and they want to repair it by gutting it and replacing everything at maximum cost. I think the problem is more simple, but I can't seem to find the cause. There is a small breather in the fuel line that gets clogged with sawdust, but cleaning that hasn't helped. Any Ideas why this thing isn't getting any gas, and how to fix it?