KTM 350 EXC-F 2017, Owner'S Manual

Page: 70 / 129

12 SERVICE WORK ON THE CHASSIS
68
Finishing work
–
Remove the motorcycle from the lift stand. ( p. 50)
12.37 Checking the chain, rear sprocket, engine sprocket and chain guide
Preparatory work
–
Raise the motorcycle with the lift stand. ( p. 50)
400227-01
Main work
–
Shift gear to neutral.
–
Check the rear sprocket and engine sprocket for wear.
» If the rear sprocket or engine sprocket is worn:
–
Change the drivetrain kit.
Info
The engine sprocket, rear sprocket and chain should always be
replaced together.
400987-10
–
Pull on the upper part of the chain with the specified weight

.
Guideline
Weight of chain wear measurement 10… 15 kg (22… 33 lb.)
–
Measure the distance

of 18 chain links in the lower chain section.
Info
Chain wear is not always even, so you should repeat this measurement at
different chain positions.
Maximum distance

at the longest
chain section
272 mm (10.71 in)
» If the distance
 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.
E00390-10
–
Check the chain sliding guard for wear.
» If the bottom edge of the chain bolt 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 the screws on the chain sliding guard.
Guideline
Screw, chain sliding
guard M6 14 Nm
(10.3 lbf ft) Loctite ® 243™