ENGLISH
34
MAINTENANCE WORK ON CHASSIS AND ENGINE
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Adjust idling speed *
Use the adjusting screw
[1]
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.
Draining of float chamber of the carburetor
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 leads to engine malfunction.
Wait until the engine is cold before commencing to perform the worksteps
indicated below.
Close the fuel tap.
Put the end of the hose
[2]
that leads downward behind the engine into an
appropriate container.
Open the drain plug
[3]
, turning it counterclockwise a few times, and let the
fuel drain from the float chamber.
Then tighten the drain plug and open the fuel tap.
FUEL IS EASILY FLAMMABLE AND TOXIC. WHEN HANDLING FUEL, BE SURE TO
EXERCISE THE UTMOST CAUTION. NEVER PERFORM ANY WORK ON THE FUEL SYS-
TEM IN THE PROXIMITY OF OPEN FLAMES OR BURNING CIGARETTES. ALWAYS
ALLOW THE ENGINE TO COOL OFF FIRST. IMMEDIATELY CLEAN UP ANY FUEL WHICH
MAY HAVE BEEN SPILLED. MATERIALS SATURATED WITH FUEL ARE ALSO EASILY
FLAMMABLE. IN CASE YOU INGESTED FUEL OR FUEL SPLASHED INTO YOUR
EYES, CONSULT A DOCTOR IMMEDIATELY.
Engine oil
Automobile engine oil used to be used for four-stroke motorcycles before there
were separate motorcycle specifications. Different technical developments made
it necessary to have a separate specification for four-stroke motorcycles - the
JASO T903 MA standard. Whereas car engines require long changing inter-
vals, 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 tem-
peratures 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
[A]
of
the inspection glass.
If the engine is warm, the oil level should be visible at the upper edge
[B]
of
the inspection glass.
Add engine oil if necessary.
– INSUFFICIENT AMOUNTS OF OR LOW-GRADE ENGINE OIL LEAD TO PREMA-
TURE WEAR IN THE ENGINE.
– DO NOT OVERFILL THE ENGINE CASE.
– DO NOT UNDERFILL THE ENGINE CASE.
0°C
32°F
10W/50
5W/40
JASO T903 MA
TEMPERATUR
1
2
3
2
A
B
