KTM 125 SX 2024 User Manual

18 SERVICE WORK ON THE ENGINE
122
S05549-10
Main work
–
Remove gear oil level monitoring screw
1
.
401955-11
–
Remove filler plug
2
with the O-ring.
– Add gear oil until it emerges from the drill hole of the gear oil
level monitoring screw.
Engine oil (15W/50) ( p. 140)
– Mount and tighten the gear oil level monitoring screw.
Guideline
Screw, gear oil level
monitoring
M6 8 Nm (5.9 lbf ft)
–
Mount and tighten filler plug
2
together with the O-ring.
Finishing work
Danger
Danger of poisoning Exhaust gases are toxic and inhal-
ing them may result in unconsciousness and death.
– Always make sure there is sufficient ventilation
when running the engine.
– Use effective exhaust extraction when starting or
running the engine in an enclosed space.
– Start the engine and check it for leaks.

KTM 125 SX 2024 Specifications

General

Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Electric starter
Transmission	6-speed
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Ground Clearance	375 mm
Seat Height	950 mm
Front Tire	80/100-21"
Rear Tire	100/90-19"
Engine Type	Single-cylinder, 2-stroke
Fuel System	Mikuni TMX 38
Front Brake	Disc brake, 260 mm
Rear Brake	Disc brake, 220 mm
Clutch	Wet, multi-disc clutch, Brembo hydraulics
Frame	Central double-cradle type in chrome-molybdenum steel