Checking The Chain, Rear Sprocket, And Engine Sprocket - KTM 2015 RC 390 EU Owner's Manual

12 SERVICE WORK ON THE CHASSIS
12.13

Checking the chain, rear sprocket, and engine sprocket

–
Check the rear sprocket and engine sprocket for wear.
» If the rear sprocket and engine sprocket are worn:
–
Change the power set.
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Info
The engine sprocket, rear sprocket, and chain should always be replaced
together.
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