Yamaha XZ550RJ 1982 Owner's Manual page 61

NOTE: _ _ _ _ _ _ _ _ _ _ _ _ _
When this brake service is necessary, have
your Yamaha dealer replace the pads.
Brake fluid leakage (Front)
Apply the brake for a few minutes. Check to
see if any brake fluid leaks out from pipe
joints or the master cylinder.
-49-
WARNING:
If brake fluid leakage is found, ask your
Yamaha dealer for immediate repairs.
Such leakage could indicate a hazardous
condition in the brake system.