Yanmar 3JH5E Operation Manual page 81

12/05
Changing the Marine Gear Oil and
Replacing the Marine Gear Oil Filter
(If Equipped)
(1)
(2)
(3)
(4)
Figure 3
Note: 4JH4-TE / 4JH4-HTE1 /
4JH4-HTE engines with KMH4A
marine gear shown. Refer to the
Operation Manual for the marine
gear or sail drive for procedure.
1. Remove cap from the filler port and
attach an oil drain pump. Drain marine
gear oil.
NOTICE
ALWAYS be environmentally responsible.
2. KMH4A Marine Gear:
Wash the marine gear oil filter:
(a) Remove side cover (Figure 3, (5))
and remove the filter (Figure 3, (2)).
(b) Clean the filter thoroughly with
kerosene or clean diesel fuel.
(c) Hold the filter in place with the coil
spring (Figure 3, (3)) and insert into
the case. Install a new O-ring
(Figure 3, (4)) in the side cover.
(d) Install side cover and tighten side
cover bolts.
3. Fill marine gear with clean marine gear
oil. See Marine Gear Oil Specifications
on page 41.
JH Series Operation Manual
(5)
0004495
PERIODIC MAINTENANCE
4. Perform a trial run and check for oil leaks.
5. Approximately 10 minutes after
stopping the engine, remove the oil
dipstick and check the oil level. Add oil
if the level is too low.
Checking and Adjusting the
Alternator V-Belt Tension
WARNING
Sever Hazard. Perform this check with
the power switch off and the battery
switch turned off to avoid contact with
moving parts.
NOTICE
• When there is not enough tension in the
V-belt, it will slip and the coolant pump
will fail to supply coolant. Engine
overheating and seizure will result.
• When there is too much tension in the
V-belt, the belt will become damaged
more quickly and the coolant pump
bearing may be damaged.
• NEVER get any oil on the belt(s). Oil on
the belt causes slipping and stretching.
Replace the belt if it is damaged.
Figure 4
Note: 4JH4-TE shown.
(1)
0004509
73