Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 322Get this manual

SHIMMING (EXCEPT FOR USA AND CANADA) (F15AF9.9C)
Reverse gear shim

Find the reverse gear shim thickness (T2) by selecting shims until the specified measurement (Mv2) is obtained with the special tool
1Measure: Measurement (Mv2) Shimming plate: 90890-06701 Digital caliper: 90890-06704

Remove the shim(s) before measuring2Calculate: Reverse gear shim thickness (T2) Reverse gear shim thickness: (T2)80.57Mv2 3Select: Reverse gear shim

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