Throttle valve adjustment
Note. The throttle valve opening is set at the factory and cannot be changed during operation. However, if the stop screw is accidentally turned, the adjustment is restored as shown below.
Loosen the throttle stop screw (see fig.) and unscrew the screw so that it barely moves away from the stop. Then screw in the stop screw until it touches the stop, then turn it in another half turn.
Tighten the stop screw locknut.
Check engine idle speed and adjust if necessary.
Throttle cable adjustment
Carefully check that there are no bent or twisted sections on the cable.
Press the accelerator pedal all the way down and measure the gap between the throttle control lever and the stop, which should be no more than 1 mm.
Warning. If at least one fold is found on the throttle cable, replace the cable.
Engine idle adjustment
Adjustment of idling of the engine is made on the engine warmed up to normal working temperature with correctly established moment of ignition, with serviceable system of ignition, with a pure filtering element of the air filter.
Check if the throttle valve opening is correctly adjusted.
Disconnect the crankcase breather hose.
Make sure that the current consumers are switched off.
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