I don't remember ever working on a bike that needed the axle to be installed in one direction or the other . . . . having been to a couple of motorcycle assmbly lines, the direction of installaion seems to be based on ease of installtion on the line (which includes the side the assembler is standing on) . . . .
Put it in either way (I generally try to put the securing nuts on the same side -- makes it easier to check for the presence of the angle clips I tend to use).
"Here is your country. Cherish these natural wonders, cherish the natural resources, cherish the history and romance as a sacred heritage, for your children and your children's children. Do not let selfish men or greedy interests skin your country of its beauty, its riches or its romance.” T.R.