Mikhalidwe yogwirira ntchito ya ma archer, ma bulldozer, ma crawler crawler ndi zida zina mumakina omanga ndi yovuta, makamakazokwawaMu dongosolo loyenda kuntchito, amafunika kupirira kupsinjika kwakukulu ndi kukhudzidwa. Kuti akwaniritse mawonekedwe a makina a chokwawa, ndikofunikira kuchita kukonza kutentha kuphatikizapo kutentha, kupangira, kuponya ndi njira zina pazinthu zambiri zomwe zimapanga chokwawa. Njira zokonzera kutentha zomwe zatchulidwa pamwambapa zonse ndi njira zokonzera mphamvu zambiri. Chifukwa chake, kugwiritsa ntchito mphamvu zatsopano, ukadaulo watsopano, ndi ukadaulo wokonzedwa bwino kwakhala njira yofunika kwambiri yopititsira patsogolo magwiridwe antchito azinthu ndikuchepetsa ndalama zopangira, pomwe nthawi zonse kumawongolera moyo wautumiki wazinthu. Khalani njira yothandiza yosungira mphamvu.