Yanmar 3YM30 Sevice Manual page 94

4. Disassembly and reassembly
(5) Removing the intake silencer
1) Remove the air intake hose attached to the intake
manifold.
2) Remove the intake silencer from cylinder head.
(6) Removing the mixing elbow
1) Remove the seawater rubber hose connecting to a heat exchanger- a mixing elbow.
2) Remove the mixing elbow from the exhaust manifold.
L-type
Mixing elbow
Heat exchanger
(L-type mixing elbow)
Seawater
Exhaust elbow
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Intake pipe
Intake silencer
U-type
Mixing elbow
Joint
Heat exchanger
Optional
(L-type mixing elbow)
Cylinder head
Seawater