1.Matanisa yonke imibhede yasesibhedlela.
2.Indawo ebushelelezi.
3.Yenziwe ngezinto zepulasitiki zobunjiniyela obunamandla aqinile futhi ziqinile.
4.Isandla crank kungenziwa eligoqiwe
3.Ukusebenza kokuzivikela uma izikulufu ziya phezulu.
Ukusekelwa kwe-4.Joint kwenziwa amandla aphezulu ensimbi ye-alloy, i-strudy futhi i-burable.