Honda BF9.9A-BF15A Outboard Motors Shop Manual., Page 69Get this manual
bINSPECTION
VALVE STEM O.DStandard Service limit 5.47 mrn (0.2153 in) 5.45 mrn (0.2145 in)
5.49 mm (0.2161 in) 5.47 mrn (0.2153 in)
VALVE SPRING FREE LENGTH
Standard 36.8 mm (1.45 in)
Service limit
35.3 mm (1.39 in)
VALVE GUIDE I.DStandard IN 5.5 mm (0.2165 in) 5.5 (0.2165 in) Service limit 5.54 rnrn (0.2181 in) 5.57 mm (0.2192 in)