Does anyone here have a Lawnboy 5254 with the F engine? My uncle will be giving me his. I believe it's a 1988 model. He seized the engine by running it on straight gas. Can I possibly save this engine? It rotates but is extremely tight. If I fill the cylinder with kerosene or marvel mystery oil, I hope I can possibly unseize it. I also told him I have a short block for it, but it's such a cool little mower that I may not want to give him it back since I'd be putting my good low hour 1994 F short block on it. I have always wanted a 19'' model with F engine. I will be picking the 5254 up in a few weeks. It's going to need some work. The paint is chipped on it, so I don't know if I will paint it. It has some character for sure.