Amabhokisi kagiya ogundayo ayingxenye ebalulekile yabagunda utshani abasetshenziswa ezinhlelweni zezolimo zokusika nokugunda.Inhloso ka-gearbox wukudlulisa amandla akhiqizwa ugandaganda i-power take-off shaft (PTO) kuma-blade ajikelezayo okusika nokugunda utshani, izitshalo noma ezinye izimila.U-gearbox osebenza kahle ubalulekile njengoba uqinisekisa ukuthi ama-mower blades ajikeleza ngesivinini esikhulu ukuze asike ngokushesha futhi asike izitshalo eziminyene.I-gearbox ngokwayo ngokuvamile yenziwe nge-cast iron noma i-aluminium.Iqukethe izingxenye ezimbalwa ezibalulekile ezifana namashafti okokufaka nokuphumayo, amagiya, ama-bearing, nama-seal.Ishafu yokufaka ixhunywe ku-PTO kagandaganda enesibopho sokukhiqiza amandla ajikelezayo.