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19
MAINTENANCE WORK ON CHASSIS AND ENGINE
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Checking chain tension
Set the motorcycle on the plug-in stand.
Press the chain down on the upper end of the chain sliding component.
The distance between the chain and the swing arm should be approx.
3 mm. The lower part of the chain should be tightened.
– If the chain is too tight the secondary transmission components (chain,
sprockets, bearings of the transmission and of the rear wheel) will be put
under additional strain that can, in addition to premature wear, also cause
chain breakage.
– If the chain is not tight enough it can slip off the sprockets and block the
rear wheel or damage the engine.
– In both cases the rider is very likely to lose control of the motorcycle.
Correcting chain tension
Undo the hexagon nut [1], then undo both counter nuts [2] and turn the left
and the right tensioning screws [3] equally far. Then retighten the counter
nuts [2].
Before tightening the hexagon nut [1] make sure that the chain adjuster [4]
is properly resting against the tensioning screws [3] and that the rear wheel
is properly aligned with the front wheel.
Tighten the hexagon nut [1] to 40 Nm.
– If you don’t happen to have a torque wrench at hand, make sure you have
the tightening torque corrected by a KTM dealer as soon as possible. A
loose axle may lead to an unstable driving behavior of your motorcycle.
– Tighten the hexagon nut to the required torque. A loose wheel spindle may
lead to an unstable behavior of your motorcycle.
Chain maintenance
For long chain life, good maintenance is very important. The chain should be
cleaned in fireproof solvent regularly and afterwards treated with hot grease
or chain spray ( Motorex Chainlube 622).
No lubrication is allowed to reach the rear tire or the brake disks, otherwise
the road adherence and the rear wheel braking effects would be strongly reduced
and the motorcycle could easily lose control.
When mounting the chain masterlink clip, the closed side of the masterlink
clip must point in running direction.
Also check sprockets and chain guides for wear, and replace if necessary.
3 mm
2
3
1
4
2
3
4