E koho i kahi ākea o ka idler mua i kūpono no ka laulā mai 0.2-120 tons o nā kaʻa i hahai ʻia, e like me nā excavators, bulldozers a me nā mīkini kūikawā.
ʻO ke kaʻina hana wela kūikawā ka hopena i ka lōʻihi o ke ola, ke kiʻekiʻe loa ma lalo o ke alanui kaumaha, pale i ka ʻāpana.
E hoʻohana i ka sila haʻahaʻa a me ke kiʻekiʻe-pālua e hana ia i ka lubrication ola, kūpono ia no ka noi maʻamau a me ke ʻano kūikawā.
E koho i kahi ākea ākea o ka mea hoʻoponopono puna, hiki ke maʻalahi a me ka mea hoʻoponopono hydrocarbon-type nā mea noi no kaʻu kūlana hana.
