KTM EXC 300 XC Motorcycle User Manual


 
ENGLISH
44
Draining the 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.
Make sure you do this while the engine is cold. Close the fuel tap, and place a
cloth under the carburetor, which is capable of absorbing the leaking fuel. Unscrew
the plug [1] and clean it with compressed air. Then, mount the plug together with
the gasket, open the fuel tap, and check the float chamber for leaks.
Fuel is easily flammable and toxic. When handling fuel, be sure to exercise
the utmost caution. Never perform any work on the fuel system near open
flames or burning cigarettes. Always allow the engine to cool off first.
Immediately clean up any fuel which may have been spilled. Materials satu-
rated with fuel are also easily flammable. In case you ingested fuel or fuel
splashed into your eyes, consult a doctor immediately.
Dispose of the fuel properly.
Checking the float level *
Arrange the carburetor diagonally at about 60° so that the spring in the float
needle valve is not pressed together. In this position, the edge of the float
should be parallel with the float chamber sealing surface (see illustration).
MAINTENANCE WORK ON CHASSIS AND ENGINE
»
60°
1
Adjusting the engine characteristic via the ignition curve (125-300)
2 ignition curves (PERFORMANCE and SOFT) are stored in the digital box. The
PERFORMANCE ignition curve is activated in the condition at delivery. The SOFT
ignition curve can easily be activated by disconnecting the socket connector
under the tank.
A
B
To change the ignition curve, remove the seat and tank.
A) PERFORMANCE (higher engine performance) socket connector connected
B) SOFT (better driveability) socket connector disconnected
You can also change the ignition curve via the handlebar switch (Power Parts)
while driving.