Long-Term Storage; Before Storing For Long Periods Of Time - Yanmar 4LHA-HTP Operation Manual

4.9 Long-Term Storage

4.9.1 Before storing for long periods of time, perform the following.
(1) Periodic Inspection
If the time for a periodic inspection is close, perform it before storing the engine for a long
period of time (3 months or more)
(2) Draining the Cooling Water
When not using LLC, be sure to drain the water from the inside of the engine.
Precautions for Removing Hot Water to Prevent Burns
Wait until the temperature has dropped before removing cooling water from
the engine to avoid getting scalded.
Drain the water from both the seawater and
fresh water systems.
Draining the water from the seawater system
Open the water drain cock on the seawater side of the fresh water cooler and drain off the
cooling seawater.
Open the water drain cock on the oil cooler and intercooler and drain off the cooling seawater.
Open the cock on the marine gear (follow the marine gear manual)
Loosen the bolts (4) on the side cover of the seawater pump and move the cover to drain off
the cooling seawater inside.
After draining off the water, tighten the water drain cocks and reinstall the side cover on the
seawater pump.
Seawater
Fresh water cooler
CAUTION
For 4LHA-HTP/-HTZP
_
[NOTICE]
If the water is not drained, it may freeze
and damage parts of the cooling water
system .
Oil cooler
Inter cooler
_
40
Loosen bolts
Seawater pump