Checking The Chain, Rear Sprocket, Engine Sprocket, And Chain Guide - KTM 250 EXC-F 2019 Owner's Manual

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12.39

Checking the chain, rear sprocket, engine sprocket, and chain guide

Preparatory work
Raise the motorcycle with the lift stand. (
Main work
Shift the transmission to idle.
Check the chain, rear sprocket and engine sprocket for wear.
»
If the chain, rear sprocket or engine sprocket is worn:
Change the drivetrain kit.
400227-01
Pull at the top part of the chain with the specified weight
Guideline
Weight of chain wear mea-
surement
Measure distance
section.
Info
Chain wear is not always even, so you should repeat
this measurement at different chain positions.
Maximum distance
18 chain rollers at the
longest chain section
»
If distance
Change the drivetrain kit.
400987-10
SERVICE WORK ON THE CHASSIS 12
Info
The engine sprocket, rear sprocket and chain
should always be replaced together.
10 ... 15 kg (22 ... 33 lb.)
B
of 18 chain rollers in the lower chain
272 mm (10.71 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.
p. 63)
A
.
89

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250 exc-f six days 2019

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