Inspection Every 500 Hrs; Inspection Every 1000 Hrs - Yanmar 4JH3-TE Series Operation Manual

JH-Turbo-Engels1b 28-06-2002 19:56
4. Maintenance & Inspection
Blower wash
5. After operating the engine for about
10 minutes, check the boost pressure
and power output.
If there is no improvement after washing
the blower, repeat the washing process
several times.
GB
If there is still no improvement consult
your local Yanmar dealer.

4.3.4 Inspection every 500 hrs.

(1) Draining the fuel tank.
(See first 50 hrs.)
(2) Inspecting and Adjusting the Fuel
Injection Spray Condition.
Adjustment is necessary to obtain the
optimal fuel injection to ensure the best
possible engine performance. This inspec-
tion requires specialized knowledge and
techniques. Consult your Yanmar dealer or
distributor.
(3) Replace Driving Belt
(See first 50 hrs.)
(4) Inspection and Adjustment of Intake/
Exhaust Valve Clearance.
When operating for long periods of time,
the clearance between the intake/exhaust
valve and the rocker arm will change and
affect operation performance. Adjustment
is necessary.
42
Pagina 42
Inlet
Adjustment requires specialized know-
ledge and techniques. Consult your Yan-
mar dealer or distributor.
(5) Adjusting the Remote Control Cable
(See 4.3.2(3))

4.3.5 Inspection Every 1000 hrs.

(1) Inspecting and Adjusting the Fuel
Injection Timing
Fuel injection timing must be adjusted to
ensure optimal engine performance.
This maintenance requires specialized
knowledge.
Consult your Yanmar dealer or distributor.
(2) Washing the Cooling Water System
and Checking and Maintaining Parts
This maintenance requires specialized
knowledge. Consult your Yanmar dealer or
distributor. Over time rust and scale builds
up in the seawater and fresh water
systems, reducing their cooling
performance. Additionally, when the inside
of the engine oil cooler and the clutch oil
cooler become dirty, lube oil cooling
worsens causing the oil to deteriorate
more quickly.
Wash the following related parts when the
cooling water is being replaced.
Cooling water system related parts:
seawater pump, engine oil cooler, clutch
oil cooler, fresh water pump, fresh water
cooler, thermostat, etc.
(3) Replace Impeller of Seawater Pump
(See 250 hrs.)