Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 45Get this manual
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BF50BF5A VALVE GUIDE 1.0NOTE: Ream the valve guides to remove any carbon deposits before measuringMeasure and record each valve guide 1.0STANDARD IN EX 5.50 mm (0.217 In) 5.50 mm (0.217 in) SERVICE LI