Choyendetsa chitseko cha AT120 chimakhala ndi mota ya DC, chowongolera, chosinthira mawu, ndi zina zotero, zomwe zimayikidwa mwachindunji pamtengo wa chitseko cha aluminiyamu. Motokawu uli ndi giya yochepetsera ndi cholembera mawu ndipo umayendetsedwa ndi chowongolera. Chosinthira mawuchi chimapatsa mphamvu chowongolera. Chowongolera makina a chitseko cha AT120 chimatha kulumikizana ndi LCBII/TCB kudzera mu zizindikiro zosiyana, ndipo chimatha kukwaniritsa liwiro lotseguka ndi kutseka chitseko. Ndi chodalirika kwambiri, chosavuta kugwiritsa ntchito, ndipo chili ndi kugwedezeka pang'ono kwa makina. Ndi choyenera makina a zitseko okhala ndi m'lifupi wowonekera wosapitirira 900mm.
Ubwino wa malonda(zomaliza ziwirizi zimafuna ma seva ofanana kuti agwire ntchito): kuphunzira nokha m'lifupi mwa chitseko, kuphunzira nokha pa torque, kuphunzira nokha molunjika pagalimoto, mawonekedwe ogwiritsira ntchito menyu, kusintha kwa magawo osinthika pamalopo