In Reply to: Ford 950 80726 Positive Ground? posted by Glen Lewis on August 31, 2019 at 14:48:12:
Welcome aboard, matey! ALL FORD Tractors were 6V/POS GRN until the diesel series and Thousand Series. Your tractor has the 172 CID Red Tiger Engine. We cannot tell you if it is still 6V or switched over to a 12V job. Does it gave a generator and Voltage Regulator on it or just an alternator? However, having just a 6V or a 12V battery does nor designate it as a 6V or as a 12V system -there's other things that have to be changed as well, BUT, some guys slap 12V batteries on their machines and make no other changes, and call it a 12V system. A 6V battery requires thicker 00 gauge battery cables to operate effectively. If you have thin car-like battery cables, and a 6V battery, it's no good. Next, starters don't care if 6V or 12V and the starter motor has nothing to do with whether it's 6V or 12V. What is "RED Starter Solenoid"??? What is "Black to Ground"??? Colors don't conduct electrons. You need the essential manuals to identify important systems like the electrical. We have some in our MANUALS forum at the top of the red menu bar. The 800 tractor Model is similar. The TSX-765 Carburetor was made for the 600 & 700 which had the smaller Red Tiger engines at 134 CID. The 900 Series Tractor should have the Marvel-Schebler TSX-593 or TSX-706 carb on it, made more robust for the larger Red Tiger 172 CID engine. Leave it for now and concentrate on the electrical system first. Once that is straight and it runs, leave it alone. OEM M/S TSX-706 and a few others are getting hard to find. Read your manuals first before you do damage to the machine or yourself. Get a copy of the Clymer I&T F0-20 manual to start with.
Tim PloughNman Daley (MI)