KTM 660SMC Motorcycle User Manual


 
ENGLISH
34
Cooling system
Coolant is circulated by a water pump located in the engine. When the
engine is cold the coolant circulates only through the cylinder and the
cylinder head. After the engine has reached its operating temperature
(about 70°C, 158°F), the thermostat
1 opens and the coolant is also
pumped through both aluminum radiators.
Air blowing in through the radiators cools the coolant. The slower the speed
of the motorcycle, the less the coolant is cooled down. Dirty
radiators also reduce the cooling efficiency.
Pressure induced by heating of the coolant in the system is controlled by a
valve in the radiator cap
2; a water temperature rising up to 120° C
(248° F) is admissible, without fear of problems.
ƽ
WARNING
ƽ
I
F POSSIBLE
,
ALWAYS CHECK LEVEL OF COOLING LIQUID WHEN ENGINE IS COLD
. I
F YOU
HAVE TO OPEN THE RADIATOR CAP
2
WHEN THE ENGINE IS HOT
,
USE A RAG TO COVER
THE CAP AND OPEN SLOWLY TO RELEASE PRESSURE
. C
AUTION
-
SCALDING HAZARD
!
–DONOT DETACH ANY RADIATOR HOSES WHILE THE ENGINE IS HOT. THE ESCAPING
HOT COOLANT AND THE STEAM MAY CAUSE SERIOUS BURNS
.
–I
N CASE YOU GET BURNT, HOLD THE AFFECTED PART OF YOUR BODY UNDER RUNNING
COLD WATER RIGHT AWAY
!
–C
OOLANT IS TOXIC. KEEP THE COOLANT OUT OF THE REACH OF CHILDREN!
–I
N CASE COOLANT IS INGESTED, GO SEE A DOCTOR IMMEDIATELY!
–I
F COOLANT GETS INTO YOUR EYES, RINSE THEM OUT WITH WATER IMMEDIATELY
AND GO SEE A DOCTOR
!
A mixture of 60% anti freeze liquid and 40% water is used as coolant.
However, the anti-freeze protection must be at least -25° C (-13° F). This
mixture offers anti-freeze protection but also good corrosion protection and
should therefore not be replaced by pure water.
!
CAUTION
!
F
OR THE COOLING SYSTEM, USE ONLY WITH HIGH-GRADE ANTIFREEZE (MOTOREX ANTI-
F
REEZE). USING LOWER-GRADE ANTIFREEZE AGENTS, CAN CAUSE CORROSION AND
COOLANT FOAMING
.
Checking the coolant level
The coolant should be 10 mm (0,4 in) above the radiator fins when the
engine is cold (see illustr.). In the event of the coolant being drained, always
fill and bleed the system.
when engine is cold
10 mm
1
2