KTM RC 390 2019 Owner's Manual page 134

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13 SERVICE WORK ON THE CHASSIS
132
Pull on the lower chain section with the 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
15 kg (33 lb.)
B
of 20 chain rollers in the lower chain
304 mm (11.97 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
.

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