Kuyenda komwe kumaperekedwa ndi jenereta yamagetsi ya chofukula kumatumizidwa ku cholumikizira cha njanji ndi mota yothamanga ndi mkombero wa sprocket. Mano a mkombero wa sprocket ayenera kugwirizana bwino ndi cholumikizira cha njanji ndikukhala okhoza kuyendetsa cholumikiziracho mosalekeza. Ngakhale cholumikiziracho chikutambasuka chifukwa cha kuwonongeka kwa pini ndi bushing yake, manowo ayenera kugwirizana bwino. Nthawi zambiri, mkombero wa sprocket umapezeka kumbuyo kwa chipangizo choyendetsera chofukulacho.
