Cooling System - KTM 60 SX Owner's Handbook Manual

20
5
3
4
7
1
2
10 mm
when engine is cold
7
8
6
9

Cooling system

1
The water pump in the engine keeps the cooling liquid in circulation.
The cooling liquid is cooled by the air stream. Therefore, the cooling effect
is reduced when the traveling speed is reduced. Dirty radiators additionally
reduce the cooling effect.
A mixture of 40% anti freeze liquid and 60% water is used as coolant. How-
ever, the anti-freeze protection must be at least -25° C (-13° F). This mix-
ture offers anti-freeze protection but also good corrosion protection and
should therefore not be replaced by pure water.
!
F ,
OR THE COOLING SYSTEM USE ONLY WITH HIGH
C ). U -
OOLANT SING LOWER GRADE ANTIFREEZE AGENTS
.
COOLANT FOAMING
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.
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.
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
Exhaust system
The main silencer is filled with glass fiber yarn. Heat, however, causes the
glass fiber yarn filling to disintegrate which can reduce the overall perfor-
mance of the motorcycle and the damping effect achieved by the main
silencer. The glass fiber yarn package can easily and quickly be replaced.
Remove the main silencer and take off the 4 screws
the main silencer. Then take off the connecting pipe
5
Undo both hexagon nuts
8
outer sleeve .
7
Now the silencer cap can be removed together with the glass fiber yarn
9
package , pulling both backwards out of the outer sleeve. Take the old
glass fiber yarn package off the inner exhaust pipe and clean the latter with
a wire brush.
To reassemble the main silencer put the new glass fiber yarn package onto
the inner exhaust pipe (see illustration) and push the inner pipe into the
outer sleeve.
Mount the front closure cap and fasten it with the two hexagon nuts
Then fasten the front exhaust pipe
main silencer on the vehicle.
Check the exhaust system for leaks.
NOTE: Glass fiber yarn packages are offered by your licensed KTM dealer.
WARNING
T
HE EXHAUST SYSTEM BECOMES VERY HOT WHILE THE MOTORCYCLE IS RUNNING
D
AVOID BURNS O NOT START WORK ON THE EXHAUST SYSTEM UNTIL IT HAS PROPERLY
.
COOLED DOWN
CAUTION
-
GRADE ANTIFREEZE
,
CAN CAUSE CORROSION AND
,
USE A RAG TO COVER THE
.
3
at the front end of
4
.
and pull the front closure cap
4 with the 4 screws 3
!
(S A
HELL DVANCE
. I
F YOU
6
out of the
5
.
and mount the
.
TO