Ahakoa te haumitanga tuatahi kipapa ara mō te keriAhakoa he nui ake pea i ngā momo maitai kē atu, he nui ngā penapena utu mō te wā roa. Ka tino whakaitihia e ngā pūnaha keri papa rapa te kakahu o raro o te waka, ka roa ake te roa o te mahi a ngā roera, ngā idlers, me ngā sprockets tae atu ki te 30%. Kāore i rite ki ngā papa ara keri whakarewa, ka whakakorehia e ngā momo rapa te hiahia mō te whakahou pinepine nā te mea he ngāwari. Kāore hoki e hiahiatia he hinu whakahinuhinu, ka tapahia te wā tiaki me ngā whakapaunga. Ko te āhua mama o ngā papa keri ka whakaiti i te whakapaunga wahie mā te whakaiti i te taumaha katoa o te mīhini. Hei tāpiri, ko tā rātou mahi kore-kino i runga i ngā mata kua whakakikoruatia ka karo i ngā whiu utu nui, i ngā pire whakatika rānei mai i ngā kaipupuri whenua. Mō ngā kaiwhakahaere waka e whakatairanga ana i te utu katoa o te mana, ko ngā papa ara keri i hangaia ki te rapa he kōwhiringa mohio ki te taha pūtea i roto i te wā.

Kei te piki haere te hiahia o ngā kamupene e aro nui ana ki te oranga tonutanga ki ngā papa rapa keri nā te mea he pai ki te taiao. Kāore i rite ki ngā papa ara keri maitai, kāore ngā momo rapa e whakaputa i ngā mura, ā, he pai ake te whakamahi tata ki ngā rauemi mura. Ko ngā āheinga whakaiti haruru okeri papa rapaKa whai wāhi atu ki te whakaiti i te parahanga haruru o te taiao, inā koa i ngā tāone nui. He maha ngā papa ara keri hou e whakamahi ana i ngā rauemi rapa hangarua me te kore e whakararu i te mahi. I te mutunga o te oranga, ka taea te hangarua i ēnei papa keri hei hua rapa hou, he rerekē ki ngā papa whakarewa e mutu ana ki ngā whenua ururua. Mā tā rātou mahi kore tohu ka tiakina ngā mata taiao me ngā mata hanga tangata, ka whakaiti i te whakararuraru rauropi i ngā papa mahi tairongo. Mō ngā kaimahi kirimana e hiahia ana ki te whakatutuki i ngā paerewa whare matomato, i ngā whāinga pumau rānei a te kamupene, ka tukuna e ngā papa ara keri rapa he painga taiao mārama.