Checking The Chain, Rear Sprocket, Engine Sprocket, And Chain Guide - KTM 450 SX-F Owner's Manual

11 SERVICE WORK ON THE CHASSIS
11.42

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

Preparatory work
–
Raise the motorcycle with the lift stand. (
Main work
–
Shift gear to neutral.
–
Check the rear sprocket and engine sprocket for wear.
» If the rear sprocket or engine sprocket are worn:
–
Change the power set.
400227-01
–
Pull at the top part of the chain with the specified weight
Guideline
Weight, chain wear measurement
–
Measure distance
Info
Chains do not always wear evenly, which is why the measurement should be
repeated at several locations on the chain.
Maximum distance
part of the chain
»
If the distance
–
Change the power set.
400987-10
–
Check the chain sliding guard for wear.
» If the lower edge of the chain pin is at the level of 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 chain sliding guard.
Guideline
Screw, chain sliding
guard
B00346-01
x
Info
The engine sprocket, rear sprocket, and chain should only be
replaced together.
B
of 18 chain rollers on the lower chain section.
B
on the longest
B
is larger than the specified length:
x
Info
When a new chain is mounted, the rear sprocket and engine
sprocket should be changed as well.
New chains wear more rapidly on old, worn rear sprockets and
engine sprockets.
x
M6
p. 36)
A
.
10... 15 kg (22... 33 lb.)
272 mm (10.71 in)
6 Nm Loctite
(4.4 lbf ft)
56
® 243™