When the clutch is disengaged, power is transmitted from the input shaft via {TAIL ~ the gear trains} and the lay shaft via the one way clutch to the output shaft which typically provides first or low gear for {HEAD ~ use} in low speed maneuvering or where greater torque is required 
When the clutch is disengaged , power is transmitted from the input shaft via { TAIL ~ the gear trains } and the lay shaft via the one way clutch to the output shaft which typically provides first or low gear for { HEAD ~ use } in low speed maneuvering or where greater torque is required
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH