Adjusting The Chain Tension - KTM 350 EXC-F EU 2012 Repair Manual

10/REAR WHEEL

Adjusting the chain tension

14.6
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.
Main work
–
Push the chain at the end of the chain sliding component upwards to measure the
chain tension
Info
The lower 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.
Chain tension
» If the chain tension does not meet specifications:
–
Adjust the chain tension. (
101430-10
Subsequent work
–
Remove the motorcycle from the lift stand. (
Preliminary work
–
Raise the motorcycle with the lift stand. (
–
Check the chain tension. (
Main work
–
Loosen nut
–
Loosen nuts
–
Adjust the chain tension by turning adjusting screws
Guideline
Chain tension
Turn adjusting screws
and right chain adjusters are in the same position relative to the reference
marks . The rear wheel is then correctly aligned.
A
–
Tighten nuts
–
Make sure that the chain adjusters
screws .
3
–
Tighten nut
Guideline
Nut, rear wheel spindle
Info
The wide adjustment range of the chain adjusters (32 mm (1.26 in))
101360-10
enables different secondary ratios with the same chain length.
Chain adjusters
Subsequent work
–
Remove the motorcycle from the lift stand. (
.
A
must be taut.
1
p. 86)
p. 85)
.
1
.
2
on the left and right so that the markings on the left
3
.
2
are fitted correctly on the adjusting
4
.
1
can be turned by 180°.
4
.
B
55... 58 mm (2.17... 2.28 in)
p. 10)
p. 10)
left and right.
3
55... 58 mm (2.17... 2.28 in)
M20x1.5 80 Nm (59 lbf ft)
p. 10)
86