Dab tsi yuav tshwm sim yog tias txoj saw maus taus ntev

Yog tias cov saw ntawm lub cav ntev, nws yuav tsoo lub cim lub thawv thiab cov diav rawg thiab lwm yam. Nws yuav ua suab nrov thaum tsav tsheb, thiab nws yuav ua rau cov saw hlau tawm lossis ua rau lwm qhov chaw puas. Tsis tas li, txoj saw yuav nce txoj kev hnav ntawm sprocket thiab yuav kho tau lossis hloov lub sijhawm