You will need a digital volt meter and a stick pin...
1. Locate the green wire and push the stick pin through it...
2. Ground the volt meter and place the red lead of the volt meter on the stick pin.
3. Voltage should be between .90-1.0 volts The clser to 1 volt the better.
4. To adjust, loosen the two retaining screws and turn the TPS to the correct voltage.
5. Tighten and you are done...