2009-2012 Honda MUV700 Big Red Service Manual, Page 67Get this manual
TECHNICAL FEATURES 2WDto4WD
Pushing the selector lever to 4WD (Rear Diff Lockl pulls the clutch arm shaft and loads the clutch lock spring In lost motion state, the clutch sleeve stays on the pinion gearWhen the spline is engaged, the clutch sleeve slides onto the pinion joint, engaging 4WD by the tension of the clutch lock spring
Lost motion state:
4WD position
2WD position