KTM 250 SX User Manual

11 SERVICE WORK ON THE CHASSIS 61
C00229-10
(All 250/300 models)
–
Drill a hole at markings

and

.
Guideline
Diameter 6 mm (0.24 in)
Finishing work
– Install the air filter box cover. ( p. 58)
11.28 Sealing the air filter box
Preparatory work
– Remove the air filter box cover. ( p. 57)
S00847-10
Main work
(All 125/150 models)
–
Seal the air filter box in the marked area

.
401527-10
(All 250/300 models)
–
Seal the air filter box in the marked area

.
Finishing work
– Install the air filter box cover. ( p. 58)
11.29 Disassembling the main silencer
Warning
Danger of burns The exhaust system gets very hot when the vehicle is driven.
– Allow the exhaust system to cool down. Do not touch hot components.
M01161-10
(All 125/150 models)
–
Remove screws

with the washers.
–
Pull off the main silencer from the manifold at rubber sleeve

.

KTM 250 SX Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	249 cc
Bore x Stroke	66.4 mm x 72 mm
Starter	Kickstarter
Transmission	5-speed
Fuel System	Mikuni TMX 38 carburetor
Ignition	Kokusan
Final Drive	Chain
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Ground Clearance	375 mm
Fuel Tank Capacity	7.5 liters
Frame	Central tube frame made of chrome molybdenum steel
Front Brake	Disc brake, 260 mm
Rear Brake	Disc brake, 220 mm