KTM 250 SX-F 2023 User Manual

6 CONTROLS
18
6.11 Cold start button
F03671-10
The cold start button
1
is fitted to the bottom of the throttle
valve body.
The electronic fuel injection system extends the injection time if
the engine is cold and the ambient temperature is low. To help the
engine burn the increased fuel quantity, it must be supplied with
additional oxygen by pushing the cold start button.
After briefly opening up the throttle and then releasing the throttle
grip again, or turning the throttle grip towards the front, the cold
start button returns to its original position.
Info
Check whether the cold start button has returned to its
basic position.
Possible states
• The cold start button is activated – The cold start button is
pushed in all the way.
• The cold start button is deactivated – The cold start button is
in its basic position.
6.12 Idle speed adjusting screw
S05321-10
The idle setting of the throttle valve body substantially influences
the vehicle’s starting behavior, a stable idle speed, and the vehi-
cle’s response when the throttle is opened.
An engine with a correctly set idle speed is easier to start than an
engine with the idle speed set incorrectly.
The idle speed is adjusted using the idle speed adjusting
screw
1
.
Increase the idle speed by turning the idle speed adjusting screw
clockwise.
Decrease the idle speed by turning the idle speed adjusting screw
counterclockwise.

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