Yamaha XZ550RJ 1982 Service Manual page 20

NOTE:
The new pad number is to be used as a guide only.
Verify the correctness of this choice in the following
step(s).
3) At the intersection of installed pad
number (down) and measured clear-
ance (across) is a new pad number.
EXAMPLE:
Intake valve, installed pad:
No.250 (read down)
Measured clearance:
0.32mm (0.013 in) (read across)
New pad number: No.270
(intersection of down & across)
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