Yanmar 3JH5E - Page 94

PERIODIC MAINTENANCE
88 JH Series Operation Manual
Cleaning and Checking the
Seawater Passages
After prolonged use, clean the seawater
passages to remove trash, scale, rust and
other contaminants that collect in the
cooling water passages. This can cause
declining cooling performance. The
following items need to be inspected:
• Heat Exchanger
• Pressure Cap
Consult authorized Yanmar Marine dealer
or distributor.
Checking Diaphragm Assembly
(3JH5E / 4JH5E Only)
Figure 28
1 – Diaphragm Cover
2–Spring
3 – Center Plate
4 – Diaphragm
5 – Rocker Arm Cover
6 – Breather Baffle
7 – Baffle Plate
8 – Intake Silencer
9–Breather Pipe
Consult authorized Yanmar Marine dealer
or distributor.
Replacing the Alternator V-ribbed
belt
See Checking and Adjusting the Alternator
V-ribbed belt Tension on page 73.
Adjusting Intake / Exhaust Valve
Clearance
Consult authorized Yanmar Marine dealer
or distributor.
Checking the Remote Control Cable
Operation
Consult authorized Yanmar Marine dealer
or distributor.
Adjusting the Propeller Shaft
Alignment
Consult authorized Yanmar Marine dealer
or distributor.
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