KTM 125 SX 2019 User Manual

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20 TECHNICAL DATA

122

20.3.4 All 150 models

Carburetor type MIKUNI TMX 38

Carburetor identification number TMX 38 88

Needle position 3rd position from top

Jet needle 6BFY42‑71 (6BFY43‑71)

Main jet 470 (460, 480, 490, 500, 520)

Idling jet 30 (25 / 27.5 / 32.5 / 35)

Starting jet 80

Needle jet S‑4

Idle air adjusting screw

open 1.5 turns

20.3.5 Carburetor tuning (All 150 models)

403171-01

M/FT ASL Sea level

TEMP Temperature

ASO Idle air adjusting screw open

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General

Displacement	124.8 cm³
Starter	Kickstarter
Transmission	6-speed
Fuel System	Mikuni TMX 38
Front Brake	Disc brake
Rear Brake	Disc brake
Ground Clearance	375 mm
Seat Height	950 mm
EMS	Kokusan
Engine Type	1-cylinder, 2-stroke
Bore x Stroke	54 mm x 54.5 mm
Rear Suspension	WP shock absorber with linkage
Fuel Tank Capacity	7.5 l
Clutch	Wet, multi-disc clutch, Brembo hydraulics
Frame Design	Central tube frame made of chrome molybdenum steel