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Rod, I dont have a diagram or I would send it to you and that tractor has more than 2 cylinders right??? lol. However, an inoperative fuel gauge may be the tank sender or gauge or both. Its often just the sender in the tank. If you get to the sending unit and ground the wire going to it, the gauge should deflect (it (gauge) needs voltage going to it, be sure thats present on its other terminal that doesnt go to the sender) What the tank sender does is provide a variable slide wire resiatance to ground, which provides a ground to the gauge which then deflects, if it has voltage on its other side and is working (ie gauge has continuity, NOT an open circuit). The inoperative oil light may be just a burned out bulb (check it first), or the sender or both, but that shouldnt require any diagram to troubleshoot. Its my belief if you understand the theory of how these darn thigns work (thats why I answer as I did), you can troubleshoot them without any diagram, so Good Luck and let us know what the prob was. PS is that a dual battery 24 volt start system??, if so, be careful cuz they r complicated. Ol John T Nordhoff in Indiana
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