KTM 125 DUKE 2021 User Manual

TUNING THE ENGINE 17
197
17.1 Checking the play in the throttle cable
400192-11
– Check the throttle grip for smooth operation.
– Move the handlebar to the straight-ahead position. Turn the
throttle grip back and forth slightly and determine the play in
throttle cable
A
.
Throttle cable play
A
3 … 5 mm (0.12 … 0.2 in)
» If the throttle cable play does not meet the specified value:
– Adjust the play in the throttle cable. ( p. 198)
Danger
Danger of poisoning Exhaust gases are toxic and inhal-
ing them may result in unconsciousness and death.
– Always make sure there is sufficient ventilation
when running the engine.
– Use effective exhaust extraction when starting or
running the engine in an enclosed space.
– Start the engine and let it run at idle speed. Move the handle-
bar to and fro over the entire steering range.
The idle speed must not change.
» If the idle speed changes:
– Check the throttle cable routing.

KTM 125 DUKE 2021 Specifications

General

Displacement	124.7 cc
Bore x Stroke	58 mm x 47.2 mm
Compression Ratio	12.5:1
Transmission	6-speed
Rear Suspension	WP APEX Monoshock
Front Brake	Four-piston radial fixed caliper, brake disc
Rear Brake	Single-piston floating caliper, brake disc
Front Tire	110/70 R17
Rear Tire	150/60 R17
Seat Height	830 mm
Dry Weight	139 kg
Frame	Steel Trellis Frame, Powder Coated
Ground Clearance	175 mm
Engine Type	Single Cylinder, 4-Stroke, Liquid Cooled
Torque	12 Nm
Fuel System	Electronic Fuel Injection
Front Suspension	WP APEX 43
Fuel Tank Capacity	13.4 liters
Wheelbase	1, 357 mm