This is my uncles 920 jonsered. The fuel tank was all messed up. I was going to go through and clean the tank and put all new seals bearings piston and rings. My uncle has had this saw to every saw shop in the country and I don't think even he knows exactly what all has been done to it. Is this the right piston and cylinder and the new piston is wrong or is the new piston right and the old piston and cylinder wrong. Everything measures 54mm.
Thanks
Tom
Thanks
Tom