He takirere whakahaere te pūwero e whakahaere ana i te rere o te hau ki roto i te miihini. Ina uru te hau ki roto i te paipa whakauru, ka konatunatua ki te penehīni ka huri hei ranunga mura, ka mura, ka mahi. E hono ana ki te tātari hau, te poraka miihini, e mōhiotia ana ko te korokoro o te miihini motuka.
Ko te āhua o ngā miihini penehīni wha-patunga e whā-whiu ana te tere o te hau (throttle). Ko te tere o te hau tētahi o ngā wāhanga tino nui o te pūnaha miihini waka werohanga hiko o ēnei rā. Ko te wāhanga o runga ko te tātari hau, ko te wāhanga o raro ko te poraka rango o te miihini, ā, koia te korokoro o te miihini motuka. He ngāwari te whakaterenga o te motuka, ā, he hononga pai te tere paru, ka taea e te horoi i te tere o te hau te whakaiti i te whakapaunga wahie ka taea te hanga i te miihini kia ngāwari, kia kaha hoki. Kaua te tere o te hau e tangohia hei horoi, engari me arotahi hoki ki te kōrero atu a ngā rangatira.
