Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 366Get this manual
SHIMMING (FT9.9D)
SHIMMING (FT9.9D)
9 There is no need to select shims when reassembling with the original case and inner parts9 Shim calculations are required when reassembling with the original inner parts and new case (the difference between the original inner parts and the new case)9 Measurements and adjustments are required when replacing an inner part(s)
SHIM SELECTION
Pinion gear shim 1Measure: Measurement (Mv3) Digital caliper: 90890-06704