65
PERIODIC SERVICE
B
Anti-freeze
To avoid personal injury:
A
When using anti-freeze, put on some protection
such as rubber gloves (Anti-freeze contains
poison.).
A
If should drink anti-freeze, throw up at once
and take medical attention.
A
When anti-freeze comes in contact with the
skin or clothing, wash it off immediately.
A
Do not mix different types of Anti-freeze. The
mixture can produce chemical reaction
causing harmful substances.
A
Anti-freeze is extremely flammable and
explosive under certain conditions. Keep fire
and children away from anti-freeze.
A
When draining fluids from the engine, place
some container underneath the engine body. If
swallowed anti-freeze is harmful.
A
Do not pour waste onto the grounds, down a
drain, or into any water source.
A
Also, observe the relevant environmental
protection regulations when disposing of anti-
freeze.
If it freezes, coolant can damage the cylinders and
radiator. If the ambient temperature falls below 0
(32 F)
or before a long-term storage, let out cooling water
completely, or mix fresh water with long-life coolant and fill
the radiator and reserve tank with the mixture.
1. Long-life coolant (hereafter LLC) comes in several
types. Use ethylene glycol (EG) type for this engine.
2. Before employing LLC-mixed cooling water, fill the
radiator with fresh water and empty it again. Repeat
this procedure 2 or 3 times to clean up the inside.
3. Mixing the LLC
Put the LLC in cooling water in the percentage (%) for
a target temperature. When mixing, stir it up well, and
then fill into the radiator.
4. The procedure for the mixing of water and anti-freeze
differs according to the make of the anti-freeze and the
ambient temperature. Refer to SAE J1034 standard,
more specifically also to SAE J814c.
A
When the anti-freeze is mixed with water, the anti-
freeze mixing ratio must be less than 50%.
D
At 1.013 x 10 Pa (760mmHg) pressure (atmospheric).
A higher boiling point is obtained by using a radiator
pressure cap which permits the development of
pressure within the cooling system.
5. Adding the LLC
(1) Add only water if the mixture reduces in amount
by evaporation.
(2) If there is a mixture leak, add the LLC of the same
manufacturer and type in the same mixture
percentage.
*Never add any long-life coolant of different
manufacturer. (Different brands may have
different additive components, and the engine
may fail to perform as specified.)
6. When the LLC is mixed, do not employ any radiator
cleaning agent. The LLC contains anti-corrosive
agent. If mixed with the cleaning agent, sludge may
build up, adversely affecting the engine parts.
7. Kubota's genuine long-life coolant has a service life of
2 years. Be sure to change the coolant every 2 years.
A
The above data represent industry standards that
necessitate a minimum glycol content in the
concentrated anti-freeze.
A
When the coolant level drops due to evaporation, add
water only to keep the anti-freeze mixing ratio less
than 50%. In case of leakage, add anti-freeze and
water in the specified mixing ratio before filling in to the
radiator.
Vol %
Anti-freeze
Freezing Point
Boiling Point *
F
F
40
50
-24
-37
-12
-34
106
108
222
226