Yamaha Marine Outboards F4A/F4 Factory Service Manual, Page 202Get this manual
CRANKCASE, CRANKSHAFT AND CAMSHAFT
1 2Install:
9Dowel pin 9Gasket (crankcase) 9Crankcase 9Cylinder body 2
When assembling the crankcase and cylinder body, make sure that the camshaft gear teeth mesh with the oil splash gear b3Tighten: 9Bolt (crankcase)