Adjusting The Chain Tension; Checking The Chain, Rear Sprocket, Engine Sprocket And Chain Guide - KTM 350 SX-F Owner's Manual

SERVICE WORK ON THE CHASSIS

Adjusting the chain tension

10.37
Warning
Danger of accidents Danger caused by incorrect chain tension.
–
If the chain tension is too high, the components of the secondary power train (chain, engine sprocket, rear sprocket, bear-
ings in transmission and rear wheel) are under additional load. Apart from premature wear, in extreme cases the chain can
rupture or the countershaft of the transmission can break. On the other hand, if the chain is loose, it can fall off the engine
sprocket or the rear sprocket and block the rear wheel or damage the engine. Check the chain tension and correct if neces-
sary.

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

10.38
Preliminary work
–
Raise the motorcycle with the lift stand. (
–
Check the chain tension. (
Main work
–
Loosen nut
–
Loosen nuts
–
Adjust the chain tension by turning adjusting screws
Guideline
Chain tension
Turn adjusting screws
and right chain adjusters are in the same position relative to the reference
marks . The rear wheel is then correctly aligned.
A
–
Tighten nuts
–
Make sure that chain adjusters
–
Tighten nut
Guideline
Nut, rear wheel spindle
Info
The wide adjustment range of the chain adjusters (32 mm (1.18 in))
enables different secondary ratios with the same chain length.
B00343-12
Chain adjusters
Subsequent work
–
Remove the motorcycle from the lift stand. (
Preliminary 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 and engine sprocket are worn:
–
Replace the rear sprocket or engine sprocket.
400227-01
p. 47)
.
1
.
2
on the left and right so that the markings on the left
3
.
2
are fitted correctly on adjusting screws
4
.
1
can be turned by 180°.
4
Info
The engine sprocket, rear sprocket and chain should always be
replaced together.
p. 32)
left and right.
3
55... 58 mm (2.17... 2.28 in)
M20x1.5 80 Nm (59 lbf ft)
p. 32)
p. 32)
x
48
.
3