{TAIL ~ second detection} means for detecting the operation amount of {HEAD ~ the clutch operation member}; and 
{ TAIL ~ second detection } means for detecting the operation amount of { HEAD ~ the clutch operation member } ; and
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH