Checking The Coolant Level; Bleeding The Cooling System - KTM 125 SX Owner's Handbook Manual

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10 mm
when engine is cold
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2
3
4
A mixture of 40 % antifreeze liquid and 60 % water is used as coolant.
However, the anti-freeze protection must be at least for –25° C (–13° F).
This mixture offers antifreeze protection but also good corrosion protection
and should therefore not be replaced by pure water.
!
F ,
OR THE COOLING SYSTEM USE ONLY HIGH
lant). U
SING LOWERGRADE ANTIFREEZE AGENTS CAN CAUSE CORROSION AND COOLANT
.
FOAMING
Pressure induced by heating of the coolant in the system is controlled by a
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valve in the radiator cap ; a water temperature of up to 120° C (248° F) is
admissible therefore, having to expect any trouble.

Checking the coolant level

The coolant should be 10 mm (0.4 in) above the radiator fins when the
engine is cold (cf. diagram). In the event of the coolant being drained,
always fill and bleed the system.
WARNING
I ,
F POSSIBLE ALWAYS CHECK LEVEL OF COOLING LIQUID WHEN ENGINE IS COLD
HAVE TO OPEN THE RADIATOR CAP WHEN THE ENGINE IS HOT
CAP AND OPEN SLOWLY TO RELEASE PRESSURE
!
T
HE COOLING SYSTEM MUST BE BLED AFTER DRAINING THE COOLING LIQUID OR AFTER
0.25 (0.06 US
ADDING MORE THAN L

Bleeding the cooling system

The cooling system must be bled as described below after draining of the
cooling liquid or after adding more than 0.25 l (0.06 US gallons) cooling
liquid.
– Make sure that the drain screw
– Pour approx. 0.5 litres (0.13 US gallons) coolant into the system.
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– Remove screw at the cylinder head. Reinstall it as soon as the cooling
liquid emerges free of air bubbles (only for 125/200 engines).
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– Remove the screw on the right radiator and tilt the motorcycle to the
right approx. 30 degree angle.
– Now add cooling liquid until it emerges free of bubbles at the right
radiator. Then immediately mount the screw so that no more air can
enter the right radiator.
– Return the motorcycle to its original position and top up the left radiator
until the coolant can be seen approx. 10 mm (0.4 in) above the radiator
fins.
– Check the coolant level again after a short ride.
CAUTION
- (Shell Advance Coo-
GRADE ANTIFREEZE
,
USE A RAG TO COVER THE
.
CAUTION
) .
GALLONS COOLING LIQUID
2
is fastened.
!
. I
F YOU
!
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