First apply some of the lapping compound to the valve face area with your finger. It only requires a small amount of compound. Gently place your valve into the engine. Use the Lapping stick by pushing the suction cup into the top of the valve and rotate it back and forth in between your hands. After about 10 seconds remove the valve and wipe the lapping compound off of both the valve and the valve seat. Inspect and make sure the contact area is uniform and about in the middle of the valve face. Repeat this process with the other valve and seat.
I hope this basic explanation of tractor wiring helps you make sense of the tangled mess in your tractor. This was just a basic overview of wiring concepts. You can add additional components to your tractor such as safety switches, fuses, ammeters, hour meters, indicator lights, etc. They all will be wired in a similar fashion to above. The most important concept to remember is you need a closed loop or circuit to have electrical flow, and it’s best to visualize your wiring in separate circuits.
D-42 - Engine Wiring Diagram Specialist
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