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Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Cold Weather Operations
In cold weather, engine oil gets thicker and the coolant
can freeze. As a result, the engine fails to start, or the
cylinder heads and heat exchanger may be damaged.
To prevent such problems, follow the instructions
given below.
Fuel
When handling fuel, make sure there are no open
flames or other fire hazards near the engine.
Wipe off any spilled fuel completely. Spilled fuel can
be ignited and cause a fire.
Change oil to oil having a lower viscosity.
It is necessary to use fuel that has a pour point suit-
able for the ambient temperature.
Note: For fuel, refer to
"FUEL"
Engine Oil
Use engine oil suitable for the ambient temperature of
the engine.
Note: For engine oil, refer to
8-4
(4-1).
"ENGINE OIL"
(5-1).
Coolant
Never open the coolant expansion tank cap during
the operation or immediately after stopping. Stop the
engine and, after coolant has sufficiently cooled
down, open the cap.
Place waste cloth over the coolant expansion tank
cap, and loosen the cap about a quarter-turn to
release the internal pressure.
The coolant is hot while the engine is running and
immediately after stopping. If the cap is opened
while the coolant is hot, hot coolant steam that can
burn you will burst out. To avoid a steam burn, wear
thick rubber gloves or wrap a cloth around the cap.
When fastening the coolant expansion tank cap, be
sure to tighten securely.
In cold weather the coolant can be frozen, and it could
cause damage to the crankcase. Therefore, be sure to
use an all-season long life coolant that has anti-freeze
and anti-rust protection for the cooling system.
Note: For coolant and LLC, refer to
Maintenance After Cold Weather is Over
When the cold weather ends, select the fuel, engine
oil and coolant suitable for the outside temperature
referring to the specifications in this manual.
Draining Sea Water
When the ambient temperature drops below 0°C
[32°F], the seawater used to cool the engine can
freeze and cause serious problems such as seawater
pump damage. Drain seawater after engine operation.
For seawater draining, refer to
(8-4).
"COOLANT"
(6-1).
"Draining Sea Water"
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Troubleshooting
