Draining The Carburetor Float Chamber; Engine Oil; Checking The Engine Oil Level - KTM 640 LC4 Owner's Manual

1
2
1
38
JASO T903 MA
TEMPERATUR
5W/40
B
A
0°C
32°F
10W/50

Draining the carburetor float chamber *

Following every wet-cleaning procedure, the float chamber of the
carburetor should be drained in order to remove any water that may have
penetrated into it. Water in the float chamber causes engine malfunction.
Carry out this job with the engine being cold.
Close the fuel tap.
1
Put one end of the hose that leads downward behind the engine into a
collecting vessel.
2
Open the drain plug (turning it counterclockwise) by several turns, and
drain the fuel from the float chamber.
Then, retighten the drain plug and open the fuel tap.
WARNING
F
UEL IS HIGHLY FLAMMABLE AND TOXIC
. N
FUEL EVER PERFORM ANY WORK ON THE FUEL SYSTEM NEAR OPEN FIRE OR BURNING
. A
CIGARETTES LWAYS ALLOW THE ENGINE TO COOL DOWN FIRST
. M
FUEL IMMEDIATELY ATERIALS SATURATED WITH FUEL ARE HIGHLY FLAMMABLE
. I
WELL F YOU HAVE ACCIDENTALLY SWALLOWED FUEL OR IF IT HAS GOTTEN INTO YOUR
,
EYES GO SEE A PHYSICIAN IMMEDIATELY

Engine oil

Automobile engine oil used to be used for four-stroke motorcycles before
there were separate motorcycle specifications. Different technical develop-
ments made it necessary to have a separate specification for four-stroke
motorcycles - the JASO T903 MA standard. Whereas car engines require
long changing intervals, motorcycle engines require a higher power output
at higher speeds. Most motorcycle engines also use the same oil to lubricate
the transmission and the clutch. The JASO MA standard responds to these
special requirements.
Only use fully synthetic engine oils that meet the JASO MA quality require-
ments (see information on the can).
KTM recommends Motorex Power Synt 4T in the 10W/50 viscosity (for
temperatures over 0°C, 32°F) or 5W/40 (for temperatures under 0°C,
32°F).

Checking the engine oil level

The engine oil level can be checked when the engine is cold or warm.
To check, place the motorcycle in an upright position on a level surface
(center stand).
If the engine is cold, the oil level should be visible at the lower edge
the inspection glass.
If the engine is warm, the oil level should be visible at the upper edge
the inspection glass.
Add engine oil if necessary.
!
– I
NSUFFICIENT AMOUNTS OF OR LOW
.
IN THE ENGINE
– D
O NOT OVERFILL THE ENGINE CASE
– D
O NOT UNDERFILL THE ENGINE CASE
. B
E EXTREMELY CAUTIOUS WHEN HANDLING
. W
.
CAUTION
-
GRADE ENGINE OIL LEAD TO PREMATURE WEAR
.
.
IPE UP ANY SPILT
,
AS
A
of
B
of
!