He ngongo momi kei te taha o te tātari hau.He aha kei te haere?
He ngongo tenei i roto i te punaha whakangao i te pouaka karekau e arai ana i te hau ngongo ki roto i te kohanga mo te wera.Ko te miihini o te motuka he punaha whakangao hau kaha, a, i te wa e rere ana te miihini, ka uru etahi hau ki roto i te pouaka crankcase ma te mowhiti piston.Mena he nui rawa te hau e uru ana ki roto i te pouaka crankcase, ka piki ake te pehanga o te crankcase, ka pa te piston ki raro, engari ka pa ki te mahi hiri o te miihini.No reira, he mea tika kia pau enei hau i roto i te crankcase.Mena ka tukuna atu enei hau ki roto i te hau, ka whakapokea te taiao, na reira nga miihini i hanga te punaha whakangao hau kaha.Ko te punaha whakangao a te pouaka karekau ka huri i te hau mai i te pouaka crankcase ki roto i te kohao whakauru kia uru atu ano ki roto i te ruuma mura.He waahanga nui ano hoki o te punaha whakaahuru crankcase, e kiia nei ko te whakawehe hinu me te hau.Ko tetahi wahanga o te hau e uru ana ki roto i te pouaka crankcase he hau pau, ko tetahi wahi he kohu hinu.Ko te whakawehe hinu me te hau ko te wehe i te hau pau mai i te mamaoa hinu, ka taea te karo i te miihini hinu e tahu ana.Mena ka pakaru te whakawehe hinu me te hau, ka uru atu te mamaoa hinu ki roto i te rango kia uru ki roto i te wera, ka tahu te miihini ki te hinu, ka piki ake te kohi waro i roto i te ruuma mura.Mena ka wera te miihini i te hinu mo te wa roa, ka raru pea te kaitahuri catalytic toru-ara.
