Yamaha 40V - Shimming; Shim Selection (for Usa and Canada); Pinion Gear Shim

6-19
LOWR
E
SHIMMING
SHIMMING
NOTE:
Shim selection requirement guide:
● Not required when;
reassembling with original case and inner
parts.
● Numeric calculation is required when;
reassembling with original inner parts
and the new case. (Difference between
original and new case)
● Measurement and adjustment is required
when;
replacing the inner part(s).
SHIM SELECTION
(FOR USA AND CANADA)
Pinion gear shim
NOTE:
Find pinion gear shim thickness (T3) by
selecting shims until the specified measure-
ment (M) is obtained with the special tool.
1. Calculate:
● Specified measurement (M)
NOTE:
● P is the deviation of the lower case dimen-
sion from standard. It is stamped on the
trim tab mounting surface of the lower
case in 0.01 mm units. If the P mark is
missing or unreadable, assume a P mark
of “0”, and check the backlash when the
unit is assembled.
● If the P value is negative (–), then subtract
the P value from the measurement.
Example:
If P mark is “+5”, then M = 0.30 mm + (+5)/100
= 0.30 + 0.05 mm
= 0.35 mm
If P mark is “–5”, then M = 0.30 mm + (–5)/100
= 0.30 – 0.05 mm
= 0.25 mm
Specified measurement (M) =
0.30 mm + P/100