Yanmar BY Series Service Manual page 28

GENERAL SERVICE INFORMATION
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Note: Typical 4BY2 engine shown. 6BY2 is similar.
1 – Seawater Supply
2 – Seawater Pump
3 – Hydraulic Oil Cooler
4 – Charge Air Cooler
5 – Engine Heat Exchanger
6 – Exhaust Seawater Mixing Elbow
7 – Exhaust / Seawater Exit
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Figure 3-7Cooling Flow
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Figure 3-7
© 2009 Yanmar Marine International
Engine Piping Diagrams
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8 – Engine Coolant Pump
9 – Thermostat
10 – Engine Oil Cooler
11 – Engine Coolant Passages
12 – Coolant Recovery Tank
13 – Water Cooled Exhaust Manifold
BY Service Manual
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0006511