ENGLISH
31
Stop light and tail light - replacing the bulb
Remove seat.
Turn the lamp socket
1
approximately 30° counterclockwise and pull it out
of the tail light housing.
Slightly depress the bulb, turn it approx. 30° counterclockwise and pull it
out of the socket.
To mount the lamp reverse the worksteps indicated above.
Cooling system
Cooling liquid is circulated by a water pump
2
located in the engine. When
the engine is cold the cooling liquid circulates only through the cylinder and
the cylinder head. After the engine has reached its operating temperature
(about 70° C, 158° F), the thermostat
3
opens and the cooling liquid is also
pumped through both aluminum radiators.
Air blowing in through the radiators cools the cooling liquid. The slower the
speed of the motorcycle, the less the cooling liquid is cooled down. Dirty
radiator fins also reduce the cooling efficiency.
If little or no air blows through the radiators, for example when riding
through slow traffic or waiting at traffic lights, the cooling liquid tempera-
ture will rise. If the cooling liquid temperature rises to 85° C (185° F), the
fan on the left radiator will switch on. This fan will provide additional air cir-
culation through the radiator thereby preventing the cooling system from
overheating.
Pressure induced by heating of the cooling liquid in the cooling system is
controlled by a valve in the radiator cap
4
; a water temperature rising up to
120° C (248° F) is admissible, without fear of problems.
!
CAUTION
!
The red cooling liquid temperature warning light
5
will begin to light up, if
the cooling liquid temperature reaches approx. 110°C and henceforth has
exceeded its normal operating temperature.
Possible causes:
– riding slowly with a large load at a higher air temperature:
If possible increase your running speed, so that more air can blow
through the radiators. Should the warning light still be on off after 300
meters, stop immediately, switch off the engine and look for other possi-
ble causes.
– Too little cooling liquid in the system:
Let the engine cool down, and check the system for leakage’s. Also
examine the cooling liquid level CAUTION SCALDING HAZARD! Do not
drive on, until there is sufficient liquid in the cooling system. Go to your
nearest KTM garage and get it seen to. If you drive with the cooling
liquid temperature warning light on, you will cause even more damages
to the engine.
– The cooling fan on the left cooler is not working:
The cooling fan must be running, when the cooling liquid temperature is
110°C and the ignition is on. If the fan is not working, and there
appears to be sufficient cooling liquid, the only thing you can do is to
drive on to your nearest KTM garage at the least possible engine load.
A mixture of 40% antifreezer and 60% water is used as cooling liquid.
How-ever, the anti-freeze protection must be at least -25° C (-13° F). Aside
from antifreezing protection, this mixture also provides great corrosion pro-
tection which is why it must not be replaced by pure water.
!
CAUTION
!
F
OR
THE
COOLING
SYSTEM
,
USE
ONLY
HIGH
-
GRADE
ANTIFREEZER
(M
OTOREX
A
NTI
-F
REEZE
). U
SING LOWERGRADE ANTIFREEZE AGENTS
,
CAN CAUSE CORROSION AND
COOLANT FOAMING
.
1
2
3
4
5
