Features And Benefits; Crankshaft And Cylinder - Yamaha F150A Service Manual

Features and benefits

Crankshaft and cylinder

The center of the crankshaft is offset 10 mm (0.39 in) from the center of the cylinder to make more
space to incorporate the throttle body assembly.
This design produces good engine balance and allows a compact design.
Exhaust gas from each cylinder flows directly into the exhaust manifold to obtain a compact design
for the exhaust system.
1 Throttle body assembly
2 Oil/gas separator
3 Direct exhaust system
4 Rectifier Regulator
5 Offset 10 mm (0.39 in)
6 Balancer shafts
63P3F11
Identification / Features and benefits
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S63P1070
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