Supply Cooling Fresh Water - Yanmar 4JH4-TE Operation Manual

24 3. BEFORE OPERATION

3.2.4 Supply Cooling Fresh Water

Supply cooling fresh water according to the following
procedures.
Be sure to add antifreeze to the cooling fresh water.
1) Be sure to close all the water drain cocks.
Drain cocks in
Model
fresh water line
4JH4-TE 3
Note:
1. The water drain cocks are opened before shipping
from the plant.
2. Marine gear ZF25A doesn't have a drain cock on
the clutch cooler.
3. Seawater pump doesn't have a drain cock.
When loosening side cover bolts of seawater
pump, seawater drains.
Drain cocks in
seawater line
2 (Clutch cooler: 1)
4JH4-TE
1
2
1 Coolant tank
2 Fresh water pump
3
4
1 Drain cock for fresh water 3 Drain cock for seawater
2 Fuel pump
4
3
008790-00X
3 Drain seawater from
seawater pump cover
4 Drain cocks for fresh water
2
1
008791-00X
4 Clutch cooler