no nut on left


hi,question,did they alter the gearbox on the fourtraks after 93 cause i dont have the dreaded nut on the left the same as the filler on the right.i did on my 89 f75 but not on this one 94 f78.the diahatsu logo is on the casing so its not another.just curious.should have taken bundy's advice and rigged up a filler pipe now ive to scrub the slabs.