Udindo wa chitetezero chotsirizika chagalimoto kutsogolo kwagalimoto: 1, kuteteza zinthu zing'onozing'ono kuzing'ono mu chipinda cha injini poyendetsa, kapena kukhumudwitsa injini yamafuta mukamakoka injini, ndikupangitsa kuti malo a injini akhale oyera; 2, mukamayang'ana, imatha kupewa madzi kuti asadzimangire chipinda cha injini, ndikuletsa gawo lamagetsi kuchokera kunyowa ndi madzi ndikuyambitsa mavuto.