Thank you verymuch for your replies.

Chasis model is 111. Engine model is 124..electric model..

Ya the part (activator) which i am talking lies next to Engine. And big airfilter pipe is going to it. it contains the springs which controls the accelarator . I mean if i pull the spring little bit the accelator of engine goes up etc..there is number return on it 72467912 11..the mechanic told me that it controls the rpm. He tried to change the relay switch but he said its okk..what the part called?..as i searched whole internet but no part called activator..

Sorry i am newbie in sparepart.

thanks & regards
Is