I bought a used 394 last year, built in 1999, ser.# 9050035. I was milling a 26"x13' ash log. I made the first cut in about 15 minutes (is this good or bad?), set the saw down and refueled. Adjusted the Alaskan for a 2" cut and the saw would not start. This has happened before when bucking firewood logs and I have to wait over an hour for it to cool enough to restart. When I finally got it going again, I got within 1" of finishing the second slab when I ran out of fuel (again about 15 minutes). After letting it cool for 1 1/2 hours it just would not start in the slabbing position, I had to work it all the way back to the other end of the log, set it upright to start it then cut the remaining inch from the other end. It took me three days to finish this log, I got 20-2x6x13' but it was frustrating. Also the on/off switch doesn't work either. So what do I need to fix this thing?