KTM 250 EXC 2023 User Manual

12 SERVICE WORK ON THE CHASSIS
90
400987-10
– Pull on the top section of the chain with the specified
weight
A
.
Guideline
Weight, chain wear measure-
ment
10 … 15 kg (22 … 33 lb.)
–
Measure distance
B
of 18 chain rollers in the lower chain
section.
Info
Chain wear is not always even, so you should repeat
this measurement at different chain positions.
Maximum distance
B
from
18 chain rollers at the
longest chain section
272 mm (10.71 in)
»
If distance
B
is greater than the specified measurement:
–
Change the drivetrain kit.
Info
When a new chain is mounted, the rear sprocket
and engine sprocket should also be changed.
New chains wear out faster on old, worn sprock-
ets.
E00886-10
– Check the chain sliding guard for wear.
» If the lower edge of the chain pins is in line with, or below,
the chain sliding guard:
– Change the chain sliding guard.
– Check that the chain sliding guard is firmly seated.
» If the chain sliding guard is loose:
– Tighten screws on the chain sliding guard.
Guideline
Screw, chain
sliding guard
M6 10 Nm (7.4 lbf ft)
Loctite
®
243™

KTM 250 EXC 2023 Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	249 cm³
Bore x Stroke	66.4 mm x 72 mm
Starter	Electric starter
Transmission	6-speed
Cooling	Liquid cooled
Front Suspension	WP XPLOR-USD, Ø 48 mm
Front Brake	Disc brake, 260 mm
Rear Brake	Disc brake, 220 mm
Fuel Tank Capacity	9 L
Ground Clearance	370 mm
Seat Height	960 mm
Rear Suspension	WP XPLOR shock absorber with linkage
Frame	Central double-cradle type, Chromium-Molybdenum