Yamaha XZ550RJ 1982 Owner's Manual page 245

2. If engine case is excessively greasy, ap-
ply degreaser with a paint brush. Do not
apply degreaser to wheel axles.
3. Rinse dirt and degreaser off with a
garden hose, using only enoug_ h hose
pressure to do the job.
CAUTION:
Excessive hose pressure may cause
water seepage and contamination of
wheel bearings, front forks, brake drums
and transmission seals. Many expensive
repair bills have resulted from improper
high pressure detergent applications
such as those available in coinoperated
car washers.
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