a main speed change mechanism disposed within a front half of said transmission casing so as to perform {HEAD ~ a second speed change transmission} between {TAIL ~ a drive shaft} , driven by said first speed change shaft , and a second speed change shaft , 
between
a main speed change mechanism disposed within a front half of said transmission casing so as to perform { HEAD ~ a second speed change transmission } between { TAIL ~ a drive shaft } , driven by said first speed change shaft , and a second speed change shaft ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH