I have a cheap Craftsman 16 inch chainsaw, model 358.350370. From what I have read so far, these are Poulan. My question, I need a new flywheel (I broke the integral keyway so the whole flywheel is bad). The flywheel is a walbro (f I remember right it had G55 stamped on it). The Sears part number is 530039209, how can I find the Poulan part number? I need to keep this saw running for a couple months until I can get a new Husqvarna.