Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 58Get this manual
SFSOSF5A 3) Remove the connecting rod and measure the plastigaugeSTANDARD 0.040-0.063 mm (0.0016-0.0025 in) SERVICE LIMIT 0.08 mm (0.003 in)
4) If the clearance exceeds the service limit, replace the con necting rod and recheck the clearance
CONNECTING ROD BIG END AXIAL CLEARANCE
STANDARD 0.1-0.7 mm (0.004-0.028 in) SERVICE LIMIT 1.0 mm (0.039 in)