Carburetor - Idle (50 Sx); Carburetor - Idle (50 Sx Mini); Carburetor - Adjusting Idle Speed (50 Sx) - KTM 50 SX Owner's Manual

15 TUNING THE ENGINE
15.4

Carburetor - idle (50 SX)

15.5

Carburetor - idle (50 SX Mini)

15.6 Carburetor - adjusting idle speed
The idle setting of the carburetor has a big influence on the starting behavior, stable
idling and the response to throttle opening. That means that an engine with a correctly
set idle speed is easier to start than if the idle is set wrongly.
Info
The carburetor and its components are subject to increased wear caused by
engine vibration. Wear can result in malfunctioning.
The idle speed is adjusted with the idle adjustment screw
The idle mixture is adjusted with the idle mixture adjustment screw
700520-01
The idle setting of the carburetor has a big influence on the starting behavior, stable
idling and the response to throttle opening. That means that an engine with a correctly
set idle speed is easier to start than if the idle is set wrongly.
Info
The carburetor and its components are subject to increased wear caused by
engine vibration. Wear can result in malfunctioning.
The idle speed is adjusted with the adjustment screw
The idle mixture is adjusted with the idle mixture adjustment screw
700522-01
(50 SX)
x
–
Screw in the idle adjusting screw
setting.
Guideline
Idle mixture adjusting screw
Open
–
Run the engine until warm.
Guideline
Warm-up time
700520-01
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result
in unconsciousness and/or death.
–
–
Adjust the idle speed with the adjusting screw
Guideline
Choke function deactivated – Choke knob is in lower position. No O-ring is visi-
ble. ( p. 14)
Idle speed
–
Turn the idle adjusting screw
–
Note the position and turn the idle adjusting screw slowly counterclockwise until
the idle speed falls.
–
Adjust to the point between these two positions with the highest idle speed.
until it stops and then to the prescribed basic
2
When running the engine, always make sure there is sufficient ventila-
tion, and do not start or run the engine in an enclosed space without an
effective exhaust extraction system.
slowly clockwise until the idle speed begins to fall.
2
.
1
.
2
.
1
.
2
3 turns
≥ 5 min
.
1
1,400... 1,500 rpm
63