Ko te keti wairere hydrodynamic Automatic he mea hanga ki te kowiri tira, te konumohe me te rapa, ko te tukanga pupuri wai he kaupapa tino parakore, kaore he taraiwa hiko, kaore he kaimahi i runga i te mahi, he tino haumaru me te pono. Ka whakatauritea ki te hiko hiko, ki etahi atu ranei, karekau he morearea o te ruku hiko, kare ranei e mahi me te kore hiko hiko.
