Engine Piping Diagrams; 4By2 - Yanmar BY Series Service Manual

GENERAL SERVICE INFORMATION

ENGINE PIPING DIAGRAMS

4BY2

1 – Fuel Inlet from Tank
2 – Fuel Fine Filter
3 – Fuel Feed Pump
4 – Inlet Fuel Temperature Sensor
5 – High-Pressure Fuel Pump
6 – High-Pressure Fuel Supply Line
7 – High-Pressure Fuel Common Rail
8 – Fuel Injection Line
9 – Fuel Injector
3-8
Figure 3-5Fuel Flow
(9)
(10)
(14)
(6)
(4)
(5)
Figure 3-5
© 2009 Yanmar Marine International
(8)
(7)
(11)
(3)
(12)
(16)
(13)
10 – Fuel Injector Return Hose
11 – Common Rail Return Line
12 – Return Fuel Tee with Back Pressure Valve
13 – Return Fuel to Fuel Tank with Over Pressure
Valve
14 – High-Pressure Fuel Rail Pressure Sensor
15 – High-Pressure Fuel Regulator
(ECU-Controlled)
16 – Fuel Volume Regulator (ECU-Controlled)
Engine Piping Diagrams
(15)
(1)
BY Service Manual
(2)
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