Honda Outboards BF40A/BF50A Service Manual, Page 124Get this manual
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HONDABF35A45A
17.S6 mm (0.707 in)
PISTON PIN 0.0STANDARD
17.994-18.000 mm (0.7084-0.7086 in)
SERVICE LIMIT
17.S54 mm (0.7068 in)
CONNECTING ROD