Honda Outboards BF40A/BF50A Service Manual, Page 103Get this manual
HONDABF35A45A
OIL PUMP
1) Remove the cylinder head assembly (P9-2)
After assembling the oil pump and before installing it on the cylinder head, pour approximately cc (0.3 cu in) of oil into the oil pump body
I REASSEMBLY: on the.oil pump shatt Align the projection
with the dent in the camshaftIf difficulty is encounted in aligning the projection with the dent, rotate the camshaft and align
[3} OIL PUMP SHAFT
I INSPECTIONP9-1 I
(5] OIL PUMP BODY
[4] 56 25 mm O-RING
[6) PUMP COVER O-RING