12 SERVICE WORK ON THE CHASSIS 59
12.39 Checking the chain tension
Warning
Danger of accidents Danger caused by incorrect chain tension.
– If the chain is too taut, the components of the secondary power transmission (chain, engine sprocket, rear sprocket, bearings
in the transmission and in the rear wheel) will be under additional load. In addition to premature wear, this can cause the chain
or the countershaft of the transmission to break in extreme cases. If the chain is too loose, however, it may fall off the engine
sprocket or rear sprocket and block the rear wheel or damage the engine. Ensure that the chain tension is correct and adjust
it if necessary.
Preparatory work
– Raise the motorcycle with a lift stand. ( p. 41)
B01806-10
Main work
– Push the chain at the end of the chain sliding component upwards to measure the
chain tension
A
.
Info
The lower chain section
1
must be taut.
Chain wear is not always even, so you should repeat this measurement at
different chain positions.
Chain tension 55… 58 mm (2.17… 2.28 in)
» If the chain tension does not meet specifications:
– Adjust the chain tension. ( p. 59)
Finishing work
– Remove the motorcycle from the lift stand. ( p. 41)
12.40 Adjusting the chain tension
Warning
Danger of accidents Danger caused by incorrect chain tension.
– If the chain is too taut, the components of the secondary power transmission (chain, engine sprocket, rear sprocket, bearings
in the transmission and in the rear wheel) will be under additional load. In addition to premature wear, this can cause the chain
or the countershaft of the transmission to break in extreme cases. If the chain is too loose, however, it may fall off the engine
sprocket or rear sprocket and block the rear wheel or damage the engine. Ensure that the chain tension is correct and adjust
it if necessary.
Preparatory work
– Raise the motorcycle with a lift stand. ( p. 41)
– Check the chain tension. ( p. 59)
B01805-10
Main work
– Loosen nut
1
.
– Loosen nuts
2
.
– Adjust the chain tension by turning adjusting screws
3
left and right.
Guideline
Chain tension 55… 58 mm (2.17… 2.28 in)
Turn adjusting screws
3
on the left and right so that the markings on the left and
right chain adjusters are in the same position relative to the reference marks
A
.
The rear wheel is then correctly aligned.
– Tighten nuts
2
.
– Make sure that the chain adjusters
4
are fitted correctly on the adjusting screws
3
.
– Tighten nut
1
.
Guideline
Nut, rear wheel spindle M20x1.5 80 Nm (59 lbf ft)
Info
The wide adjustment range of the chain adjusters (32 mm (1.26 in)) enables
different secondary ratios with the same chain length.
Chain adjusters
4
can be turned by 180°.
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