Inspection
Remove the left rear crankcase cover (page 2-2)
Disconnect the neutral switch connector.
Shift the transmission into neutral and check for continuity between the Light green wire terminal and ground.
There should be continuity when the transmission is in neutral, and no continuity when the transmission is in gear.
Removal/installation
Remove the left rear crankcase cover (page 2-2)
Disconnect the neutral switch connector. Remove the neutral switch and sealing washer.
Replace the sealing washer with new one.
Torque: 12 N·m (1.2 kgf·m, 9 lbf·ft).
Installation is in the reverse order of removal.