Honda BF15D BF20D Outboard Motors Shop Manual., Page 12Get this manual
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ENGINE (continued) Part Pistons Skirt O.DPiston-to-cylinderclearance Item Standard 58.97058.990 mm (2.32162.3224 in) 0.0100.045 mm (0.00040.0015 in) 16.00216.008 mm (0.63000.6302 in) 15.99416.000 mm (