Exchanging The Brake Light And Tail Light Bulb; Cooling System - KTM 640 LC4 Owner's Manual
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Also See for 640 LC4:
- Owner's manual (60 pages) ,
- Owner's manual (53 pages) ,
- Owner's handbook manual (43 pages)
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Exchanging the brake light and tail light bulb
1
Remove the cap
on the underside of the license plate retainer.
2
Turn the lamp socket
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.
NOTE: Since the bulb on the tail end is subjected to higher vibrations,
heavy-duty bulbs are available from your KTM dealer.
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
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rise. If the coolant temperature rises to 85°C (184°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.
!
!
CAUTION
4
T
HE RED TEMPERATURE WARNING LAMP FOR THE COOLING LIQUID
WILL BEGIN TO
. 120°C (246°F),
BLINK WHEN THE COOLING LIQUID HAS REACHED APPROX
EXCEEDING
.
THE NORMAL OPERATING TEMPERATURE
P
:
OSSIBLE CAUSES
– S
:
LOW RIDING WITH LARGE LOADS AT A HIGHER AIR TEMPERATURE
I
,
F POSSIBLE INCREASE YOUR RUNNING SPEED
SO THAT MORE AIR CAN BLOW
. S
THROUGH THE RADIATORS
HOULD THE WARNING LIGHT STILL BE ON OFF AFTER
300
,
,
METERS
STOP IMMEDIATELY
SWITCH OFF THE ENGINE AND LOOK FOR OTHER
.
POSSIBLE CAUSES
– T
:
OO LITTLE COOLING LIQUID IN THE SYSTEM
L
,
’
. A
ET THE ENGINE COOL DOWN
AND CHECK THE SYSTEM FOR LEAKAGE
S
LSO
CAUTION SCALDING HAZARD! D
EXAMINE THE COOLING LIQUID LEVEL
O NOT
,
. G
DRIVE ON
UNTIL THERE IS SUFFICIENT LIQUID IN THE COOLING SYSTEM
O TO YOUR
KTM
. I
NEAREST
GARAGE AND GET IT SEEN TO
F YOU DRIVE WITH THE COOLING
,
LIQUID TEMPERATURE WARNING LIGHT ON
YOU WILL CAUSE EVEN MORE DAMAGES
.
TO THE ENGINE
– T
:
HE COOLING FAN ON THE LEFT COOLER IS NOT WORKING
T
,
HE COOLING FAN MUST BE RUNNING
WHEN THE COOLING LIQUID TEMPERATURE IS
100°C (210°F)
. I
,
AND THE IGNITION IS ON
F THE FAN IS NOT WORKING
AND THERE
,
APPEARS TO BE SUFFICIENT COOLING LIQUID
THE ONLY THING YOU CAN DO IS TO
KTM
.
DRIVE ON TO YOUR NEAREST
GARAGE AT THE LEAST POSSIBLE ENGINE LOAD
– C
(
)
.
ONTINUOUS USE OF THE CLUTCH
RIDING THE CLUTCH
AT LOWER SPEEDS
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
protection which is why it must not be replaced by pure water.
!
!
CAUTION
F
,
-
(M
A
-
OR THE COOLING SYSTEM
USE ONLY HIGH
GRADE ANTIFREEZER
OTOREX
NTI
F
). U
,
REEZE
SING LOWERGRADE ANTIFREEZE AGENTS
CAN CAUSE CORROSION AND
.
COOLANT FOAMING
Pressure induced by heating of the cooling liquid in the cooling system is
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controlled by a valve in the radiator cap
; a water temperature rising up to
125°C (255°F) is admissible, without fear of problems.
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