Mau otsogolera Kutchinjiriza mphira ndi gawo lofunikira pamakina amagetsi, lomwe limagwira ntchito yofunika kwambiri popewa kugunda kwamagetsi, ma circulation afupiafupi, ndi zoopsa zina. Amagwiritsidwa ntchito kuphimba ndi kuteteza mawaya amagetsi, zingwe, ndi zida ku chinyezi, kutentha, ndi zinthu zina zachilengedwe.