Wāhanga ngira tere teitei V12/15
1. He whakatupuranga hou te Mīhini Whakairoiro o ngā taputapu motuhake mō ngā rīpene, pērā i te rīpene, te putea tākai, te takai hauora me ētahi atu.
2. He tere te whakahaere, ā, ka taea te tere ki te 800-1300 rpm, he pai te mahi, he nui te hua.
3. Mōta tahuritanga auau kore-taahiraa, he ngāwari ki te whakahaere me te penapena mahi me te tiaki i te miro.
4. He tino tika te hanga o te mīhini, he hototahi, he pakari, he ngāwari ki te whakahaere, he kore utu te whakarerekētanga, he tere te tuku i ngā wāhanga e manawapa ana, ā, he ngāwari te tango me te tiaki.
5. He iti te rahi o te tautuhinga takai, ā, he ngāwari ki te whakamahi, ā, ka mutu aunoa te tautuhinga rīpene takai.