Adjusting The Chain Tension - KTM 125 ECX EU Owner's Manual

SERVICE WORK ON THE CHASSIS

Adjusting the chain tension

10.40
Warning
Danger of accidents Danger caused by incorrect chain tension.
–
If the chain tension is too high, the components of the secondary power train (chain, engine sprocket, rear sprocket, bear-
ings in transmission and rear wheel) are under additional load. Apart from premature wear, in extreme cases the chain can
rupture or the countershaft of the transmission can break. On the other hand, if the chain is loose, it can fall off the engine
sprocket or the rear sprocket and block the rear wheel or damage the engine. Check the chain tension and correct if neces-
sary.
–
Check the chain guide for wear.
Info
Wear can be seen on the front of the chain guide.
» If the light part of the chain guide is worn:
–
Change the chain guide.
400985-01
–
Check the chain guide for tightness.
» If the chain guide is loose:
–
Tighten the chain guide.
Guideline
Remaining screws, chassis
–
Remove the motorcycle from the lift stand. (
100865-10
–
Raise the motorcycle with the lift stand. (
–
Push the chain at the end of the chain sliding component upwards to measure
chain tension
Info
The bottom chain section
When the chain guard is mounted, it must be possible to pull up the chain
at least to the point where it makes contact with chain guard
Chain wear is not always even, so you should repeat this measurement at
different chain positions.
101430-10
x
.

must be taut.

M6 10 Nm
(7.4 lbf ft)
p. 44)
p. 44)
.

63