Periodic Maintenance Procedures; After Initial 50 Hours Of Operation - Yanmar 3JH4E Operation Manual

PERIODIC MAINTENANCE
PROCEDURES
After Initial 50 Hours of
Operation
Perform the following maintenance after the
initial 50 hours of operation.
• Draining the Fuel Tank
• Changing the Engine Oil and
Replacing the Engine Oil Filter
Element
• Changing the Marine Gear Oil and
Replacing the Marine Gear Oil Filter (If
Equipped)
• Adjusting the Alternator V-Belt
Tension
• Adjusting Intake / Exhaust Valve
Clearance
• Checking and Adjusting the Remote
Control Cable
• Adjusting Propeller Shaft Alignment
Draining the Fuel Tank
(4)
(3)
Figure 1
Note: Optional fuel tank shown. Actual
equipment may differ.
1. Put a pan under the drain cock
(Figure 1, (2)) to catch fuel.
2. Open the drain cock and drain water
and sediment. Close the drain cock
when the fuel is clean and free of air
bubbles.
JH4 Series Operation Manual
(2)
(1)
0004542
PERIODIC MAINTENANCE
Changing the Engine Oil and
Replacing the Engine Oil Filter
Element
The engine oil on a new engine becomes
contaminated from the initial break-in of
internal parts. It is very important that the
initial oil replacement is performed as
scheduled.
It is easiest and most effective to drain the
engine oil after operation while the engine is
still warm. WARNING! If you must drain
the engine oil while it is still hot, stay
clear of the hot engine oil to avoid being
burned. ALWAYS wear eye protection.
1. Turn the engine OFF.
2. NOTICE: Prevent dirt and debris from
contaminating engine oil. Carefully
clean the dipstick and the surrounding
area before you remove the dipstick.
Remove the engine oil dipstick. Attach
the oil drain pump (if equipped) and
pump out the oil.
For easier draining, remove the engine
oil fill cap.
3. Turn the engine oil filter (Figure 2)
counterclockwise with a wrench.
4. Remove the engine oil filter.
Figure 2
Note: 4JH4-TE shown.
5. Install a new filter element and tighten
by hand until the seal touches the
housing.
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