Yamaha 115-225 HP Outboards Service Manual, Page 116Get this manual
IpOWRi&1 ASSEMBLY AND ADJUSTMENT 3) Put crank shaft on the cylinder body bringing locating holes to the pins
4) Bring all seal ring gaps upward as shown
5) Put the crank upper bearing housing and the crank lower oil seal housing on both ends of the crank shaft6) With the arrow of the upper bearing housing pointing to the exhaust cover as shown, finger-tighten the bolts