KTM 125 SX 2024 User Manual

TUNING THE ENGINE 17
115
17.1 Changing the mapping
Info
The desired engine characteristic can be altered using the combination switch.
Changing the mapping also affects the response of the exhaust control.
The setting most recently selected is activated again when restarting.
The mapping can also be changed during the ride.
W00077-10
Activating lean mapping:
–
Press button
1
.
Guideline
Engine speed < 4,000 rpm
The indicator lamp
A
lights up.
Lean – Recommended for firm/hard surfaces
W00077-11
Activating rich mapping:
–
Press button
2
.
Guideline
Engine speed < 4,000 rpm
The indicator lamp
B
lights up.
Rich – Recommended for sandy/loose surfaces
17.2 Checking the play in the throttle cable
400192-11
– Check the throttle grip for smooth operation.
– Move the handlebar to the straight-ahead position. Turn the
throttle grip back and forth slightly and determine the play in
throttle cable
A
.
Play in throttle cable 2 … 3 mm (0.08 …
0.12 in)
» If the throttle cable play does not meet the specified value:
– Adjust the play in the throttle cable. ( p. 116)
– Push the cold start button in all the way.
When the throttle grip is turned forward, the cold start but-
ton returns to its original position.
» If the cold start button does not return to its original posi-
tion:
– Adjust the play in the throttle cable. ( p. 116)

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