8 volt batteries have been used on 6 volt systems for as long as I can remember. They are usually put on when the tractor became hard starting. But the lights and all work just fine. I would look into getting an 8 volt regulator because it just maintains the battery better. There is a way of you adjusting it your self on the old mechanical regulators and that is to bend hook up a VOM or DVM and hook it appropriately across the battery. Pull the cover off the regulator ans you will see two coils. One is the regulator come in relay and the other is the regulator. Start the engine and runt the rpm up till you see the voltage increase on your meter to show a voltage above the standard battery voltage. Increase the rpm a little more to make sure the voltage is stable and doesn't increase anymore. I have a tool I made for doing this by taking a screw driver and cutting the tip off and cutting a straight slot in the end so I can place it on the side of the spring tab. Place the tool in place on the tab and carefully by twisting the screw driver and bending the tab down tightening the spring tension. You should see an increase in voltage. Just adjust it until you have a voltage of about 8.25 to 8.5 volts. You don't want to go much over that or you will start burning bulbs. When you get it whee you want it, shut everything off and screw the cover back on the regulator. If it's a solid state regulator I got no idea. lol He** what do you expect form an old man. I guess old info. LarryT
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Today's Featured Article - Tractor Profile: Farmall M - by Staff. H so that mountable implements were interchaneable. The Farmall M was most popular with large-acreage row-crop farmers. It was powered by either a high-compression gas engine or a distillate version with lower compression. Options included the Lift-All hydraulic system, a belt pulley, PTO, rubber tires, starter, lights and a swinging drawbar. It could be ordered in the high-crop, wide-front or tricycle configurations. The high-crop version was called a Model MV.
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