KTM 250 DUKE User Manual

11 SERVICE WORK ON THE CHASSIS 86
M00715-10
Main work
–
Loosen nut

.
–
Loosen nuts

.
–
Adjust the chain tension by turning adjusting screws

left and right.
Guideline
Chain tension 5… 7 mm (0.2… 0.28 in)
Turn adjusting screws

on the left and right so that the markings on the left and
right chain adjusters

are in the same position relative to reference marks

. The
rear wheel is then correctly aligned.
Info
The upper part of the chain must be taut.
Chain wear is not always even, so you should check the setting at different chain
positions.
–
Tighten nuts

.
–
Make sure that chain adjusters

are fitted correctly on adjusting screws

.
–
Tighten nut

.
Guideline
Nut, rear wheel spindle M14x1.5 90 Nm
(66.4 lbf ft)

KTM 250 DUKE Specifications

General

Engine Type	1-cylinder, 4-stroke engine
Displacement	248.8 cc
Max Torque	24 Nm @ 7, 500 rpm
Transmission	6-speed
Cooling System	Liquid cooled
Rear Suspension	WP monoshock
Seat Height	830 mm
Dry Weight	149 kg
Bore x Stroke	72 mm x 61.1 mm
Compression Ratio	12.5:1
Ground Clearance	185 mm
Max Power	22.1 kW (30 hp) @ 9, 000 rpm
Fuel System	Bosch Electronic Fuel Injection (EFI)
Front Suspension	WP upside-down fork
Front Brake	Four-piston radial fixed caliper, brake disc
Rear Brake	Single-piston floating caliper, brake disc
Fuel Tank Capacity	13.4 l
Frame	Steel trellis frame