– Park machine safely.
 – Remove side panel to gain access to switch.
 – Disconnect switch from wiring harness and remove switch from machine.
Pins 10 and 18 are for the LED indicator light.
Use ohmmeter to check continuity across switch terminals.
a. If continuity is not present between terminals listed for each switch position, replace switch
b. If continuity exists between terminals not listed for each switch position, replace switch.