Conduct Cooling Operation Before Stopping The Engine; Protection Of The Engine Against Water Entry; Properly Maintain The Air Cleaner And Pre-Cleaner; Use Of Tools Optimum For Each Work - Mitsubishi S4S-DT Operation & Maintenance Manual

Chapter 1 BASIC SAFETY PRECAUTIONS
Conduct cooling operation
before stopping the engine
Before stopping the engine, let it idle in low gear for 5
to 6 minutes to cool down.
Stopping the engine immediately after high-load oper-
ation will cause engine parts to heat up and shorten
the service life of the engine.
During cooling operation, check the engine for abnor-
malities.
Protection of the engine against
water entry
Do not allow rainwater, etc. to enter the engine
through the air inlet or exhaust openings.
Do not wash the engine while it is operating. Cleaning
fluid (water) can be sucked into the engine.
Starting the engine with water inside the combustion
chambers can cause the water hammer action which
may result in internal engine damage and serious
accidents.
Properly maintain the air
cleaner and pre-cleaner
Maintain the engine with air cleaner or pre-cleaner
according to the following instructions.
Do not maintain the air cleaner or pre-cleaner while
the engine is running. The turbocharger may suck
particles of foreign materials into the engine and could
result in serious accidents.
Remove the air cleaner or pre-cleaner slowly to pre-
vent foreign materials accumulated on the element
from falling off. After removing the air cleaner or pre-
cleaner, immediately cover the opening (inlet port of
air cleaner; port in body for pre-cleaner) with plastic
sheet or similar means to prevent foreign materials
from entering the engine.
Clean the pre-cleaner periodically. The pre-cleaner
clogging can cause insufficient intake air or increasing
in the exhaust temperature.
If the engine is equipped with a dust indicator, con-
duct maintenance when the clog warning sign ap-
pears.
1-8
Use of tools optimum for each
work
Always keep in mind to select most appropriate tools
for the work to be performed and use them correctly. If
tools are damaged, replace them with new tools.
Avoidance of prolonged time of
starter operation
Do not use the starter for more than 10 seconds at a
time. If the engine does not start, wait for at least 1
minute before cranking again.
Continuous operation of the starter will drain the bat-
tery power and cause the starter to seize.
Do not turn off the battery
switch during operation

Do not turn off the battery switch during operation.

If the battery switch is turned OFF when the engine is
running, not only various meters will stop working but
also the alternator may have its diode and transistor
deteriorated.
Cautionary instructions for
transporting the engine
When transporting the engine on a truck, consider the
engine weight, width and height to ensure safety.
Abide by road traffic law, road vehicles act, vehicle
restriction ordinance and other pertinent laws.