Astro - That's a nice find.
I still have my dads early 70's Poulan chainsaw. It was a small thing with a 12 inch bar but it cut up limbs and small trees without a hitch. A couple of years ago I was cleaning my barn. It was cluttered with "treasurers" and I found dads old Poulan. I wondered if it would start. So, the first thing I did is to see if she turned over. Pulled on the recoil rope and she turned over - good not seized. I pulled the carb removed all of the rubber and plastic and let her soak in carb cleaner for a couple of days. Reassembled it and put it back on the saw. The chain was really dull but I was more interested to see if it would run. Changed the plug for a new one - champion I think. Changed the fuel line and impulse tube. Put fresh gas in her. It took a bit, mostly tweaking the carb, but she started. After making final adjustments to the carb, it ran like a top. I contacted the Poulan company, shared with them the same story I'm sharing now. A couple days later 2 of their Poulan caps arrived in mail. I still have them. That old saw brought back many fond memories. Roger