Honda B75 Twin and B75K1 Outboard Motors Manual., Page 28Get this manual
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SERVICE DATA
(0.0047 in)
Exhaust: O.16m.m
(0.0062 in)
Tappet Cylinder Piston Bore at the 90 piston pin End Piston ring-
0.06mm(0.0023 in) 50.1mm(1.97 in) 49.8mm(1.