Isarha yeChain, ekwabizwa ngokuba yi-chainsaw, yisarha ephathwayo eqhutywa yinjini yepetroli.Isetyenziselwa ikakhulu ukugawulwa kwemithi kunye nokwakhiwa kweenkuni.Umgaqo wayo wokusebenza kukwenza isenzo sokucheba ngentshukumo esecaleni yeencakuba ezimile okwe-L kwitsheyini yokusarha.Iisarha zamatsheyini zihlulwe ngokubanzi ngokweesarha eziqhutywa ngemoto, iisarha ezingezo moto, njl.