Replacing The Tachometer Lamps; Replacing The Indicator Lamps; Cooling System - KTM LC4 ADVENTURE R 640 2000 Owner's Handbook Manual

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Replacing the tachometer lamps *

The tachometer is easily accessible after removing the headlight mask.
– Simply pull the bulb sockets out of the housing by the cables.
– Pull the bulb out of the bulb socket.
– Before replacing the headlight mask check if the tachometer illumination
works properly.

Replacing the indicator lamps

Remove the headlight mask and the cockpit cover.
– Disconnect the cable and push the indicator lamp upwards out of the
cockpit cover.

Cooling system

Coolant is circulated by a water pump 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 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 coolant temperature will
rise. If the coolant temperature rises to 85° C ((185°F), the fan
radiator will switch on. This fan will provide additional air circulation through
the radiator thereby preventing the cooling system from overheating.
The red cooling liquid temperature warning light
the cooling liquid temperature reaches approx. 105°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
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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
105°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.
I
F POSSIBLE
HAVE TO OPEN THE RADIATOR CAP WHEN ENGINE IS HOT
AND OPEN SLOWLY TO RELEASE PRESSURE
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.
F
OR THE COOLING SYSTEM
ANTIFREEZE AGENTS
CAUTION
!
WARNING
,
ALWAYS CHECK LEVEL OF COOLING LIQUID WHEN ENGINE IS COLD
.
! CAUTION
, -
USE ONLY HIGH
,
CAN CAUSE CORROSION AND COOLANT FOAMING
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on the left
!
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will begin to light up, if
. I
,
USE A RAG TO COVER THE CAP
!
. U
GRADE ANTIFREEZER SING LOWERGRADE
.
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F YOU