Oldmechanic
New member
I have a Mac 10-10A that I bought in 1975. It has served me very well over the years. But this week I had a tree blow down and needed to cut it up. My old saw has not been used in about 4 years. Before I put it up, I drained the gas and oil, ran the carb empty and put a little oil in the cylinder. When I tried to crank it, it is VERY hard to pull the rope. Feels almost like it is ratcheting and when it kicks back sometimes it jerks the rope out of your hand. I opened it up and checked the exhaust for blockage, checked the muffler and lubricated everything that moves. With the spark plug removed, it is so easy to pull that I can pull it through with two fingers. But when the plug is put back in, it is so hard to pull that it is almost impossible. Sometimes when pulling really hard it will emit a small puff of smoke from the muffler, so it is trying to light off. Any ideas? I really don't like the idea of getting rid of the old saw, but I am out of ideas.
Thanks for your advice and help.
Thanks for your advice and help.