Speed Switch & Speed Detector
Disconnect lead wires at witch. Connect wires between terminals of speed switch and voltage sources as shown in following illustration. connect voltmeter as shown. Voltmeter should read 12 volts. Disconnect wire (from terminal two) from voltage source. Voltmeter should indicate zero. Check for correct position of armature inside the switch and repeat check. If switch does not perform as above, replace switch.
NOTE:
Then speed switch is replaced, the speed detector must be replaced also.