INSPECTION AND MAINTENANCE
7. Exchanging the Cooling Water
● Do not open the radiator cap wh
engine is running or immediately after the
engine stops. Open it after the engine stops
and has cooled d
own. If not, hot water may
spurt out and you may get burnt.
Inspection
Open the bonnet and check that the coolant
the reserve tank
is between the upper limit and
lower limit. If the level is too low,
coolant
from the water feeler port of the
reserve tank.
Exchange
(1)
Remove the radiator cap, loosen the band
and remove the flat head pin for drain and
discharge the water
completely.
(2) Wash inside of the radiator with water until no
dust or rust comes out.
※ By supplying water containing radiator
cleaning agent, running the engine for
more than 15 minutes and discharging
water, the radiator inside can be cleaned
more completely.
(3) Tighten the drain plug (flat head pin), supply a
required quantity of antifreeze and supply
fresh water until it overflows.
(4) Install the radiator cap and start the engine so
that the antifreeze liquid and fresh water are
well mixed.
<Handling of Antifreeze Liquid>
Antifreeze liquid has an effect to decrease water
freezing temperature. The freezing temperature
varies depending on the antifreeze liquid mixing
ratio. Use the antifreeze liquid at a safe
concentration in very cold regions referring to the
table below.
Antifreeze liquid mixing radio at the time of
shipment from the plant is set up for the outside air
temperature -30°C.
Antifreeze Liquid Mixing Ratio
Outside air
temperature
-5°C -10°C -15°C -20°C -25°C -30°C
Water (%)
82 73 66 61 55 49
Ratio
Antifreeze
liquid (%)
18 27 34 39 45 51
[Caution for Handling]
● When exchanging the cooling water with fresh,
be sure to add rust-proof solution in the water
and run the engine for 5 minutes to promote
mixing of water and solution.
● Mixing ratio varies a little depending on
manufacturers. Follow the instructions in the
instruction manual of each manufacturer.
● When the cooling water naturally decreases,
add only fresh water. (When semi-permanent
type is used, measure the specific gravity for
confirmation.)
● Life of antifreeze liquid is one year. Change
the antifreeze liquid with new one every year.
Dangerous
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