KTM 125 SX 2021 User Manual

SERVICE WORK ON THE CHASSIS 11
51
11.5 Removing the fork legs
Preparatory work
– Raise the motorcycle with a lift stand. ( p. 49)
– Remove the front wheel. ( p. 92)
K01143-10
Main work
–
Remove screws
1
and take off the clamp.
–
Remove screws
2
and take off the brake caliper.
– Allow the brake caliper and brake line to hang loosely to the
side.
Info
Do not actuate the hand brake lever when the front
wheel is removed.
K01174-10
–
Loosen screws
3
. Remove the left fork leg.
–
Loosen screws
4
. Remove the right fork leg.
11.6 Installing the fork legs
H01182-10
Main work
– Position the fork legs.
Air bleeder screw
1
of the right fork leg is positioned to
the front.
Valve
A
of the left fork leg faces the front.
Info
Grooves are milled into the side of the upper end of the
fork legs. The second milled groove (from the top) must
be flush with the upper edge of the upper triple clamp.
The air suspension is located in the left fork leg. The
pressure and rebound damping is located in the right
fork leg.
K01174-11
–
Tighten screws
2
.
Guideline
Screw, top triple
clamp
M8 17 Nm (12.5 lbf ft)
–
Tighten screws
3
.
Guideline
Screw, bottom triple
clamp
M8 12 Nm (8.9 lbf ft)

KTM 125 SX 2021 Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT Monoshock with linkage
Cooling	Liquid cooled
Front Tire	80/100-21"
Rear Tire	100/90-19"
Seat Height	950 mm
Ground Clearance	375 mm
Frame	Central tube frame made of chrome molybdenum steel
Front Brake	Disc brake
Rear Brake	Disc brake
Fuel Tank Capacity	7.5 liters
Fuel System	Mikuni TMX carburetor