KTM 125 SX 2018 User Manual

11 SERVICE WORK ON THE CHASSIS 56
H00016-10
Main work
–
Loosen nut
1
.
–
Loosen nuts
2
.
–
Adjust the chain tension by turning adjusting screws
3
to the left and right.
Guideline
Chain tension 55… 58 mm (2.17… 2.28 in)
Turn adjusting screws
3
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
A
. The rear wheel is now correctly aligned.
–
Tighten nuts
2
.
–
Make sure that chain adjusters
4
are fitted correctly on adjusting screws
3
.
–
Tighten nut
1
.
Guideline
Nut, rear wheel spindle M25x1.5 80 Nm (59 lbf ft)
Info
The wide adjustment range of the chain adjusters (32 mm) enables different
secondary ratios with the same chain length.
Chain adjusters
4
can be turned by 180°.
Finishing work
– Remove the motorcycle from the lift stand. ( p. 38)
11.38 Checking the chain, rear sprocket, engine sprocket, and chain guide
Preparatory work
– Raise the motorcycle with a lift stand. ( p. 38)
400227-01
Main work
– Shift the transmission to idle.
– Check the rear sprocket and engine sprocket for wear.
» If the rear sprocket and engine sprocket are worn:
– Change the drivetrain kit.
Info
The engine sprocket, rear sprocket, and chain should always be
replaced together.
400987-10
–
Pull at the top part of the chain with the specified weight
A
.
Guideline
Weight, chain wear measurement 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
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 the chain is replaced, the rear sprocket and engine sprocket
should also be changed.
New chains wear out faster on old, worn sprockets.

KTM 125 SX 2018 Specifications

General

Brand	KTM
Model	125 SX 2018
Category	Motorcycle
Language	English