Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 166Get this manual
CYLINDER HEAD 1) Remove the carbon deposits from the combustion cham-
ber2) Check the spark plug hole and valve for cracks3) Check the cylinder head for warpage with straight edge and feeler gauge
Standard
Service limit
0.10 mm (0.004 in)
0.05 (0.002 in) max
4) Measure and record the camshaft journal I.D
Standard
Service limit