15 TUNING THE ENGINE 62
15.1 Checking the installation position of the throttle grip
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– Position the throttle grip so that surface A is vertical.
Info
If the throttle grip is tipped forward, the throttle cable will slip out of the
guide on the carburetor. The throttle slide can no longer be closed.
15.2 Checking the play of the throttle cable
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– Check the throttle grip for smooth operation.
– Move the handlebar to the straight-ahead position. Move the throttle grip back-
wards and forwards to ascertain play in the throttle cable.
Play in gas throttle cable 3… 5 mm (0.12… 0.2 in)
» If the throttle cable play does not meet specifications:
–
Adjust the play in the throttle cable. x ( p. 62)
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result
in unconsciousness and/or death.
– When running the engine, always make sure there is sufficient ventila-
tion, and do not start or run the engine in an enclosed space without an
effective exhaust extraction system.
– Start the engine and let it idle. Move the handlebar to and fro over the entire steer-
ing range.
The idle speed should not change.
» If the idle speed changes:
–
Adjust the play in the throttle cable. x ( p. 62)
15.3 Adjusting the play in the throttle cable x
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– Move the handlebar to the straight-ahead position.
– Push back sleeve 1.
– Ensure that the throttle cable sleeve is pushed all the way into adjusting screw 2.
– Loosen nut 3.
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– Turn adjusting screw 2 so that there is throttle cable play A at the throttle grip.
Guideline
Play in gas throttle cable 3… 5 mm (0.12… 0.2 in)
– Tighten nut 3.
– Slide on sleeve 1.
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