KTM 390 Duke Series 2019 Owner's Manual page 133

–
Shift the transmission to neutral position.
–
Pull the lower chain section with specified weight
Guideline
Weight, chain wear measure-
ment
–
Measure distance
section.
Info
Chain wear is not always even, so you should repeat
this measurement at different chain positions.
Maximum distance
20 chain rollers at the
longest chain section
»
If distance
–
Change the drivetrain kit.
401288-10
SERVICE WORK ON THE CHASSIS 12
15 kg (33 lb.)
B
of 20 chain rollers in the lower chain
301.6 mm (11.874 in)
B
from
B
is greater than the specified measurement:
Info
When a new chain is mounted, the rear sprocket
and engine sprocket should also be changed.
New chains wear out faster on old, worn sprock-
ets.
A
.
131