Yamaha F225A Service Manual page 12

GEN
INFO
Crankcase
The crankcase is made of cast aluminum, however steel has been cast into the areas for the crank-
shaft bearings. By distinguishing the area that requires strength from the area that allows the use of
a lighter material, both weight reduction and a stronger construction have been achieved.
The caps for the crankshaft bearings are secured with four bolts to ensure a high level of assembled
rigidity.
1 Casted aluminum
2 Steel
Crankshaft
The crankshaft has been forged to realize a high-strength and high-rigidity construction. In the 60-
degree V6 cylinder configuration, the crankshaft pins are staggered 60 degrees from each other.
1 Crankpin #1
2 Crankpin #2
3 Crankpin #3
1-7
General information
3 Crankcase
4 Cylinder block
4 Crankpin #4
5 Crankpin #5
6 Crankpin #6
S69J1260
S69J1270
69J3D11