Honda Outboards BF40A/BF50A Service Manual, Page 343Get this manual
6FLYWHEELfTIMING BELT 1FLYWHEEL
BF40A-BF50A
1FLYWHEEL
aDISASSEMBLYASSEMBLY
[2] FLYWHEEL ASSEMBLY: Wipe the flywheel and crankshaft surfaces with clean shop towel sprayed With degreasing agent
Apply engine oilDegrease
ASSEMBLY:
Apply thin coat of engine oil to the flanged
part and threaded parto Do not apply too much engine oil so that it drips from the thread of the bolt Tighten the bolts to the specified torque in