Umshini wamandla ochungechunge lwe-F, i-F25 umshini owodwa wokuqina we-Dual station, okungukuthi ukuqeqesha imisipha ye-Abductor ne-Adductor emshinini owodwa owodwa.Ithanga Langaphakathi / Langaphandle lifaka indawo yokuqala okulula ukuyilungisa yakho kokubili ukujima kwethanga kwangaphakathi nangaphandle.Amaphedi ethanga e-pivoting ama-engeli ukuze akhululeke ngesikhathi sokujima.Izikhonkwane zezinyawo ezimbili zithatha izinhlobo eziningi zokujima.Abavivinya umzimba bangakwazi ukubandakanya kalula isisindo sokwengeza ngokucindezela okulula kwe-lever ukwandisa umthwalo womsebenzi.