Honda BF35A-BF45A Outboard Motors Shop Manual., Page 242Get this manual
12OIL PANPRIMARY GEAR CASESWIVEL CASE 1OIL PANIMUFFLER
BFSSA-BA
1OIL PANMUFFLER
DISASSEMBLYASSEMBLY
Remove the extension case assembly
Do not reuseAlways
OIL STRAINER
solvent and check the screen for damage, replace if necessary
13.8 2.5 mm O-RING