KTM 250 SX-F 2023 User Manual

SERVICE WORK ON THE CHASSIS 11
75
S05363-10
– Check the chain sliding guard for wear.
» If the lower edge of the chain pins is in line with, or below,
the chain sliding guard:
– Change the chain sliding guard.
– Check that the chain sliding guard is firmly seated.
» If the chain sliding guard is loose:
– Tighten screws on the chain sliding guard.
Guideline
Screw, chain slid-
ing guard on link
fork
M6 6 Nm (4.4 lbf ft)
F03714-10
– Check the chain sliding piece for wear.
» If the lower edge of the chain pins is in line with or below
the chain sliding piece:
– Change the chain sliding piece.
– Check that the chain sliding piece is firmly seated.
» If the chain sliding piece is loose:
– Tighten screw on the chain sliding piece.
Guideline
Screw, chain slid-
ing piece
M8 15 Nm
(11.1 lbf ft)
F03687-10
–
Check the chain guide with a slide gage for dimension
C
.
Minimum thickness
C
of
the chain guide
6 mm (0.24 in)
» If the measured value is less than the specified value:
– Change the chain guide.

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