great thank you for taking the time to help me with this project. i will move that over. I downloaded the wiring diagram and as far as I can tell the wires are going to the correct places. I am not getting 12 volts to the starter/generator when I test the solenoid, it's dropping to like 9-10 volts. The battery itself is 12.5v.
Is the starter connected to the solenoid for the test you described? ....If it isn't, there is a lot of resistance in the solenoid or the connections. .....The negative (ground) cable from the battery needs to have a good, clean connection where it attaches to the tractor or engine. ...Paint will cause a poor connection.
If the starter was connected for your test, slip the belt off the starter, and re-check the voltage when the starter is spinning. ....Again, the ground side of the circuit is important, so if the starter mounting is not grounded well, the starter can be sluggish.