Conduct Cooling Operation Before Stopping The Engine; Do Not Operate Engine Continuously Under Low Load; Protection Of The Engine Against Water Entry; Conduct Proper Maintenance Of Air Cleaner - Mitsubishi S6B3 Operation & Maintenance Manual

Chapter 1 BASIC SAFETY PRECAUTIONS
Conduct Cooling Operation
Before Stopping the Engine
Before stopping the engine, idle the engine 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.
Do Not Operate Engine Contin-
uously Under Low Load
When operating the engine with less than 30 % of
rated load, limit each operation to an hour. Prolonged
warm-up operation causes carbon build-up in the cyl-
inders that leads to incomplete combustion. Operate
the engine with a 30 % of rated load or more for over 5
minutes to prevent carbon build-up after one hour
continuous operation is conducted.
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.
Conduct Proper Maintenance of
Air Cleaner
Maintain the engine with air cleaner according to the
following instructions.
Never service the air cleaner while the engine is run-
ning. The turbocharger may suck particles of foreign
materials into the engine and could result in serious
accidents.
Remove the air cleaner slowly to prevent foreign ma-
terials accumulated on the element from falling off. Af-
ter removing the air cleaner, immediately cover the air
inlet with plastic sheet or similar means to prevent for-
eign materials from entering the engine.
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.