KTM 125 Repair Manual

Installing the engine
– Lift the engine into the frame from the left side, slightly grease and
mount the swingarm pivot. Tighten collar nut with 100 Nm (74 ft.lb.).
–Twist in the engine mounting bolts.
– Mount the engine brace.
– Connect the electrical wires.
– Position clutch line correctly, and mount clutch master cylinder at
handlebar.
– Mount the chain and the engine sprocket cover.
– Mount brake cylinder cover.
–Mount the carburetor.
3-3C

KTM 125 Specifications

General

Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Engine Type	Single-cylinder, 2-stroke
Displacement	124.8 cm³
Cooling System	Liquid cooled
Fuel System	Carburetor
Lubrication	Premix (oil-fuel mixture)