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MAINTENANCE WORK ON CHASSIS AND ENGINE
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Changing the original position of the clutch lever
The adjusting screw [1] can be used for individual adjustment of the original
position of the clutch lever, thus allowing adjustment to an optimal position
for every hand size.
Turning the adjusting screw counterclockwise reduces the distance between
the clutch lever and the handlebar. Turning the adjusting screw clockwise
increases the distance between the clutch lever and the handlebar.
Adjustment of the clutch lever position is only possible within certain limits.
Only turn the adjusting screw manually and never apply excessive force.
Cooling system
The water pump [2] in the engine keeps the cooling liquid in circulation.
The cooling liquid is cooled by the air stream. Therefore, the cooling effect
is reduced when the traveling speed is reduced. Dirty radiators additionally
reduce the cooling effect.
The cooling liquid can be drained by removing the screw [3] on the water-
pump cover.
Do not remove any cooler hoses or the drain screw when the engine is hot.
A mixture of 50% antifreeze liquid and 50% destilled water is used as coolant.
However, the antifreeze protection must be at least -25° C (-13° F). This mix-
ture offers antifreeze protection but also good corrosion protection and should
therefore not be replaced by pure water.
For the cooling system, use only with high-grade antifreeze (Motorex Anti-Freeze).
Using lower-grade antifreeze agents can cause corrosion and coolant foaming.
Pressure induced by heating of the coolant in the system is controlled by a valve
in the radiator cap [4]; a water temperature rising up to 120° C (248° F) is admis-
sible, without fear of problems.
Checking coolant level
The coolant should be 10 mm (0.4 in) above the radiator fins when the engine
is cold (see illustr.). In the event of the coolant being drained, always fill and
bleed the system.
If possible, always check the level of the cooling liquid when the engine is
cold. If you have to open the radiator cap when the engine is hot, use a rag
to cover the cap and open slowly to release pressure.
Adjusting the throttle cable *
There must always be a 3-5 mm (0.1-0.2 in) play in the throttle cable. To
check this, move back the protective cover [5] on the throttle grip. You must
be able to lift the outer covering of the cable 3-5 mm from the adjusting screw
[6] until resistance is felt.
To adjust, loosen the counternut [7] and turn the adjusting screw accordingly.
Finally tighten the counternut and slide the protective cover back on.
To check the correctness of this setting, start the engine, turn the handlebar
left and right, in both cases as far as it will go. This must not cause any changes
in idling speed. Otherwise, you will have to increase the backlash of the throt-
tle cable.
when engine is cold
10 mm
3-5 mm
5 6 7
3
2
1
4