KTM 250 SX-F 2023 User Manual

16 TUNING THE ENGINE
110
F03742-10
Main work
(All SX‑F models)
– Move the handlebar to the straight-ahead position.
–
Push back sleeve
1
.
–
Loosen nut
2
.
–
Turn adjusting screw
3
in as far as possible.
–
Loosen nut
4
.
–
Push cold start button
6
all the way to the stop.
–
Turn adjusting screw
5
so that the cold start button
moves to the basic position when the throttle grip is turned
to the front.
–
Tighten nut
4
.
–
Turn adjusting screw
3
so that there is play in the throt-
tle cable at the throttle grip.
Guideline
Play in throttle cable 3 … 5 mm (0.12 …
0.2 in)
–
Tighten nut
2
.
–
Slide on sleeve
1
.
– Check the throttle grip for smooth operation.
Finishing work
– Check the play in the throttle cable. ( p. 109)
16.3 Adjusting the characteristic map of the throttle response
Info
On the throttle grip, the characteristic map of the throttle response is changed by changing the guide
plate.
A guide plate with a different characteristic map is supplied.
F03743-10
Main work
–
Push back sleeve
1
.
–
Remove screws
2
and half-shells
3
.
– Detach the throttle cables and take off the grip tube.

KTM 250 SX-F 2023 Specifications

General

Engine Type	1-cylinder, 4-stroke engine
Bore x Stroke	78 mm x 52.3 mm
Compression Ratio	14.4:1
Starter	Electric starter
Transmission	5-speed
Fuel System	Keihin EFI, throttle body 44 mm
Cooling	Liquid cooled
Ignition	Keihin EMS
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Front Brake	Disc brake
Rear Brake	Disc brake
Front Tire	80/100-21
Ground Clearance	370 mm
Displacement	249.9 cm³
Final Drive	Chain
Frame	Central double-cradle type 25CrMo4 steel
Rear Tire	100/90-19
Front Wheel	1.60 x 21
Rear Wheel	2.15 x 19
Wheelbase	1, 485 mm ± 10 mm