KTM 350 EXC-F 2017, Owner'S Manual

Page: 69 / 129

12 SERVICE WORK ON THE CHASSIS
67
V00354-10
Main work
–
Pull the chain at the end of the chain sliding component upwards to measure chain
tension

.
Info
The lower chain section  must be taut.
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 55… 58 mm (2.17… 2.28 in)
» If the chain tension does not meet specifications:
–
Adjust the chain tension. ( p. 67)
Finishing work
–
Remove the motorcycle from the lift stand. ( p. 50)
12.36 Adjusting the chain tension
Warning
Danger of accidents Incorrect chain tension damages components and results in accidents.
If the chain is tensioned too much, the chain, engine sprocket, rear sprocket, transmission and rear wheel bearings wear more
quickly. Some components may break if overloaded.
If the chain is too loose, the chain may fall off the engine sprocket or the rear sprocket. As a result, the rear wheel locks or
the engine will be damaged.
–
Check the chain tension regularly.
–
Set the chain tension in accordance with the specification.
Preparatory work
–
Raise the motorcycle with the lift stand. ( p. 50)
–
Check the chain tension. ( p. 66)
E00330-10
Main work
–
Loosen nut

.
–
Loosen nuts  .
–
Adjust the chain tension by turning adjusting screws

left and right.
Guideline
Chain tension 55… 58 mm (2.17… 2.28 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.
–
Tighten nuts  .
–
Make sure that the chain adjusters  are fitted correctly on the adjusting
screws  .
–
Tighten nut

.
Guideline
Nut, rear wheel spindle M20x1.5 80 Nm (59 lbf ft)
Info
The wide adjustment range of the chain adjusters (32 mm (1.26 in))
enables different secondary ratios with the same chain length.
Chain adjusters
 can be turned by 180°.