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10 mm
when engine is cold
7
5
3
4
6
7
Cooling system
The water pump
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.
1
F
OR THE COOLING SYSTEM
C
). U
OOLANT
COOLANT FOAMING
Pressure induced by heating of the coolant in the system is controlled by a
valve in the radiator cap
is admissible, without fear of problems.
2
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.
I
F POSSIBLE
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.
8
Remove the main silencer and take off the 4 screws
the main silencer. Then take off the connecting pipe
Undo both hexagon nuts
outer sleeve
Now the silencer cap
package
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
9
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.
T
HE EXHAUST SYSTEM BECOMES VERY HOT WHILE THE MOTORCYCLE IS RUNNING
AVOID BURNS
COOLED DOWN
1
in the engine keeps the cooling liquid in circulation.
!
CAUTION
,
USE ONLY WITH HIGH
-
SING LOWER
GRADE ANTIFREEZE AGENTS
.
2
; a water temperature rising up to 120° C (248° F)
WARNING
,
ALWAYS CHECK LEVEL OF COOLING LIQUID WHEN ENGINE IS COLD
5
and pull the front closure cap
8
.
7
can be removed together with the glass fiber yarn
9
, pulling both backwards out of the outer sleeve. Take the old
4
WARNING
D
O NOT START WORK ON THE EXHAUST SYSTEM UNTIL IT HAS PROPERLY
.
!
-
(S
A
GRADE ANTIFREEZE
HELL
,
CAN CAUSE CORROSION AND
,
USE A RAG TO COVER THE
.
3
at the front end of
4
.
6
out of the
3
with the 4 screws
and mount the
DVANCE
21
. I
F YOU
5
.
.
TO
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