Carburetor - Idle; Carburetor - Adjusting The Idle Speed - KTM 150 SX 2017 Owner's Manual

16 TUNING THE ENGINE
Info
The top right jet needle A3 corresponds to the richest setting of the carburetor, and the bottom left jet needle F1 corresponds
to the leanest. The optimal carburetor tuning is shown under the respective model.
1 0 0 1
3 0 0 3
5 0 0 5
Carburetor – idle
16.4
Carburetor – adjusting the idle speed
16.5
Clip position
1... 5
The five possible clip positions are shown here.
2 0 0 2
The carburetor tuning depends on the defined ambient and operating conditions.
4 0 0 4
B00075-10
The idle setting of the carburetor has a big influence on the starting behavior, stable
idling, and the response to throttle opening. This means that an engine with a correctly
set idle speed is easier to start than if the idle speed is set wrongly.
Info
The carburetor and its components are subject to increased wear caused by
engine vibration. Wear can result in malfunctioning.
The factory setting for the carburetor is set for the following values.
(All 125/150 models)
K00486-10
Height above sea level
Ambient temperature
Super unleaded (98 octane) mixed with 2-stroke engine oil (1:40) (
(All 250/300 models)
Height above sea level
Ambient temperature
Super unleaded (95 octane) mixed with 2-stroke engine oil (1:60) (
The idle speed is adjusted with adjusting screw
The idle mixture is adjusted with idle air adjusting screw
–
Screw in idle air adjusting screw
position.
–
Run the engine until warm.
Guideline
Warm-up time
K00486-11
–
Adjust the idle speed with adjusting screw
Guideline
Choke function deactivated – The choke lever is pushed in to the stop. (
Idle speed
Clip position from above
301... 750 m (988... 2,461 ft)
16... 24 °C (61... 75 °F)
301... 750 m (988... 2,461 ft)
6... 15 °C (43... 59 °F)

Info
The basic adjustment is shown under the respective model.
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result
in unconsciousness and death.
–
Always make sure there is sufficient ventilation when running the
engine.
–
Use an effective exhaust extraction system when starting or running the
engine in an enclosed space.

.

.
all the way and turn it to the specified basic
≥ 5 min

.
1,400... 1,500 rpm
93
p. 128)
p. 128)
p. 16)