2009 Yamaha F40 Outboard Service Manual, Page 242Get this manual
Cylinder block
Make sure that the protrusions on the connecting rod and connecting rod caps face towards the flywheel magnet side of the crankshaft After tightening the connecting rod cap bolts k, check that the crankshaft rotates smoothly10Install the crankshaft journal bearings into the crankcase11Apply sealant to the mating surface of the crankcase