1986-1987 Honda Fortrax TRX70 Service Manual, Page 98Get this manual
TRANSMISSIONCRANKSHAFT
CRANKCASE ASSEMBLY
Before installing the transmission parts, inspect the 011 pump drive sprocket for wear or damageReplace if necessary
Assemble the gearshift drum, countershaft and mainshan and
install them together in the right rank case
COUNTEASHAFT
Turn the mainshaft by hand to make sure the gears rotate free-