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itself by heavy engine running, dark smoke coming out of the exhaust pipe, while
the inside of the carburetter becomes black.
Fig. 20 Adjusting the clutch
4. Automatic clutch adjusting screw 5. Automatic clutch roller
6. Automatic clutch cam
The idling speed of the engine (with fully closed throttle) can be adjusted by
extending or shortening of the throttle cable and by securing the throttle valve by
not letting it down to its bottom limit with the throttle valve screw (oblique screw
located on the carburetter body side). This screw should never be Completely
unscrewed.
To clean the carburetter dismantle it and wash the parts in clean petrol, Replace
damaged or worn parts. The idling
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