Hello all. Well I just found out that my father in law just bought a new tractor and bush hog. He said I could have his JD 650 when he found something new. Besides it being in Florida, and me being in Illinois is the only hold up. Anyway, I was in the market to buy a tractor of my own. But this deal seems a lot sweeter than me. The tractor is an 1988 model. it has a FEL, a 70 model I think. I'm curious about a few things. It has R3 turf tires. I would like to possibly change those over to R4's. Maybe r1's but I think that will be of too much expense due to a rim change. Any suggestions? Does anyone know that size? Another questions....I know the 4wd wont disengage. The lever just moves back in forth. Does anyone know about a fix for this. Is it a split the tractor in half? Just a simple pin in the lever? Any ideas, suggestions, help? Thanks again..GK