The 770 John Deere was built by Yanmar of Japan and is a good tough tractor. The 770 series should be a 3 cylinder hydrostatic drive unit. I have a 1981 model plain 650 which is a smaller gear type 2 cylinder 2 wheel drive and it is a very good reliable machine. Mine is very fuel stingy.
One thing let me caution you about, never use starting fluid in cranking it. The books says not to but I foolishly loaned mine out last spring to a friend and when the battery got weak he sprayed starting fluid in it. The starting fluid took the top of the first compression ring grove off and the top of the piston also.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
... [Read Article]
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