Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 258Get this manual
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CRANKCASE AND CRANKSHAFT
Standard Cylinder 59.0059.02 mm bore "D" (2.3232.324 in) Taper limit "T" Out of round limit
Wear limit 59.10 mm (2.327 in) 0.08 mm (0.003 in) 0.05 mm