CDragonworks

I picked up an old MF25...it was a working tractor before they parked it for a few years(he used it to mow). It is missing one lift arm and a few other minor parts. I was curious as to what battery is best size wise for a diesal tractor? We tried to start it using a jump off the trucks but it did not turn fast enough. It does roll over! So any help on this is great... Thanks! Cat