KTM 250 EXC-F User Manual

12 SERVICE WORK ON THE CHASSIS 66
402269-10
Main work
–
Remove screws

and take off silencer cap

with O-ring

.
Warning
Danger to health Soot particles irritate the eyes and mucuous membranes.
– Wear suitable breathing and eye protection when cleaning the main silencer and carbon screen.
–
Clean the main silencer housing

and screen

of the spark arrestor with compressed air.
–
Mount a new O-ring

on silencer cap

.
–
Position silencer cap

. Mount and tighten screws

.
Guideline
Screws on the main silencer M5 7 Nm (5.2 lbf ft)
Finishing work
– Install the main silencer. ( p. 65)
12.32 Changing glass fiber yarn filling in 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.
Info
Over time, the fibers of the glass fiber yarn escape and the damper "burns" out.
Not only is the noise level higher, the performance characteristic changes.
Preparatory work
– Remove the main silencer. ( p. 65)

KTM 250 EXC-F Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	249.91 cc
Bore x Stroke	78 mm x 52.3 mm
Starter	Electric starter
Transmission	6-speed
Cooling	Liquid cooled
Front Suspension	WP XPLOR-USD, Ø 48 mm
Ground Clearance	370 mm
Seat Height	960 mm
Fuel System	Keihin EFI, 42mm throttle body
Frame	Central double-cradle type, 25CrMo4 steel
Rear Suspension	WP Xplor shock absorber
Front Brake	260 mm disc
Rear Brake	220 mm disc
ABS	No