Carburetor - Basic Setting For Sandy Surfaces (All Sx Models) - KTM 250 SX 2019 Owner's Manual

21 TECHNICAL DATA
TEMP
ASO
IJ
NDL
POS
MJ
21.3.3
Idle air adjusting screw
Open
Idling jet
Jet needle
Needle position
Main jet
136
Info
Do not use on sandy terrain.

Carburetor - basic setting for sandy surfaces (All SX models)

Info
If the engine is not running smoothly, use a smaller main jet.
Temperature
Idle air adjusting screw open
Idling jet
Needle
Needle position from top
Main jet
1.5 turns
37.5
6BFY43‑71
3rd position from top
470