2000-2005 Yamaha F40B Outboard Service Manual, Page 318Get this manual
!SHIMMING (FOR USA AND CANADA)
SHIMMING (FOR USA AND CANADA)
SELECTING THE PINION SHIMS
Find the shim thickness (T3) by selecting shims until the specified value (MO) is obtained with the special tool
1Measure: Specified measurement (M) Out of specified value (MO) -7 Adjust