Yanmar 3JH5E Operation Manual page 80

PERIODIC MAINTENANCE
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.
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 arailable to drain the
engine oil after operation while the engine
is still warm.
WARNING
Burn Hazard.
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. 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. Dispose of used oil properly.
NOTICE
•Prevent dirt and debris from
contaminating engine oil. Carefully
clean the dipstick and the surrounding
area before removing the dipstick.
•ALWAYS be environmentally
responsible.
72
3. Remove the engine oil filter (Figure 2) with
a filter wrench (turn counterclockwise).
Figure 2
Note: 4JH4-TE shown.
4. Install a new filter element and tighten by
hand until the seal touches the housing.
5. Turn filter an additional 3/4 turn
clockwise with a box wrench. Tighten to
20 to 24 N·m (177 to 212 in.-lb).
6. Fill with new engine oil. See Adding
Engine Oil on page 40.
NOTICE
NEVER mix different types of engine oil.
This may adversely affect the lubricating
properties of the engine oil.
NEVER overfill. Overfilling may result in
white exhaust smoke, engine overspeed
or internal damage.
7. Perform a trial run and check for oil leaks.
8. Approximately 10 minutes after stopping the
engine, remove the oil dipstick and check the
oil level. Add oil if the level is too low.
NOTICE
Be careful not to get any oil on the
V-belt. Oil on the belt causes
slipping and stretching. Replace
the belt if it is damaged.
JH Series Operation Manual
0004508