Ndi chophatikizira cholondola, makina onyezimira atsopano opangidwa okha komanso mosalekeza amadyetsa mapepala, kuwonetsetsa kuti mapepala amakulidwe osiyanasiyana amayenda bwino. Kupatula apo, makinawa amaperekedwa ndi chojambulira chokhala ndi mapepala awiri. Ndi tebulo la katundu, gawo lodyetsa mapepala likhoza kuwonjezera pepala popanda kuyimitsa makina, zomwe zimatsimikizira kupanga kosalekeza.