English – KTM Supermoto 640LC4 User Manual
Page 29
ENGLISH
28
Checking the cooling liquid level
The cooling liquid should be 10 mm (0,4 in) above the cooling elements
when the engine is cold (cf. diagram). In the event of the cooling liquid
being drained, always fill the system before hand, then top off while the
engine is running.
ƽ
WARNING
ƽ
I
F POSSIBLE
,
ALWAYS CHECK LEVEL OF COOLING LIQUID WHEN ENGINE IS COLD
. I
F YOU
HAVE TO OPEN THE RADIATOR CAP WHEN ENGINE IS HOT
,
USE A RAG TO COVER THE CAP
AND OPEN SLOWLY TO RELEASE PRESSURE
.
Cleaning the air filter *
It is very important for the engine's life expectancy to clean the air filter
regularly.
To clean the air filter, remove screws
1
and the filter box cover. Detach
retaining clip
2
and remove the air filter
3
including the filter holder
4
from the filter box.
Remove the air filter from the filter holder and wash thoroughly in special
cleaning fluid. Products required for a professional maintenance of the air
filter are available from TWIN AIR. Press out the water from the air filter –
but do not wring – and allow the filter to dry. Lubricate the dry air filter
thoroughly with high-grade filter oil, rubbing to coat the entire filter
surface.
Clean the filter box and cover and check the carburetor connection boot for
damage.
Mount the air filter on the filter holder, position in the filter box (make sure
to center) and fix with the retaining clip. Check whether the air filter is
positioned correctly and mount the filter box cover.
!
CAUTION
!
– D
O NOT CLEAN AIR FILTER WITH FUEL OR PETROLEUM SINCE THESE WILL DAMAGE
THE FOAM
. KTM
RECOMMENDS THE PRODUCTS MADE BY
T
WIN
A
IR FOR AIR FILTER
MAINTENANCE
.
FOR CLEANING PURPOSES AND TO OIL THE AIR FILTER
.
– D
UST AND DIRT CAN ACCUMULATE AND DAMAGE THE ENGINE IF THE AIR FILTER IS
NOT MOUNTED CORRECTLY
.
Adjust idling speed *
Use the adjusting screw
5
to adjust the basic position of the throttle valve
and, thus, the idle speed.Turning in clockwise direction will increase the
idling speed, turning in counterclockwise direction will reduce the idling
speed. Normal idling speed 1400 - 1500 rpm.
when engine is cold
10 mm
1
2
3
5
4
3