ENGLISH
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MAINTENANCE WORK ON CHASSIS AND ENGINE
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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 radi-
ator 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 temperature will rise.
If the cooling liquid temperature rises to 98° C (208° F), the fan on the left
radiator will switch on. This fan will provide additional air circulation through
the radiator thereby preventing the cooling system from overheating.
Pressure induced by heating of the cooling liquid in the cooling system is con-
trolled by a valve in the radiator cap
[4]
; a water temperature rising up to 120°
C (248° F) is admissible, without fear of problems.
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 POSSIBLE 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 SYS-
TEM. 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 TEMPER-
ATURE IS 98° C (208° F) AND THE IGNITION IS ON. IF THE FAN IS NOT WORK-
ING, 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 50% antifreezer and 50% 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 protection
which is why it must not be replaced by pure water.
FOR THE COOLING SYSTEM, USE ONLY HIGH-GRADE ANTIFREEZER (MOTOREX
ANTI-FREEZE). USING LOWERGRADE ANTIFREEZE AGENTS, CAN CAUSE CORRO-
SION AND COOLANT FOAMING.
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