Yamaha XZ550RJ 1982 Owner's Manual page 233

5. Move the wheel to the right side to
separate it from the final gear case and
remove the rear wheel.
Rear wheel installati9n
When installing the rear wheel, reverse the
removal procedure. Pay attention to the
following points:
-221-
1. Apply light coating of lithium base
grease to final gear case splines and rear
wheel hub splines.
2. Make sure the splines on the wheel hub
fit into the final gear case.