Mabda'a goynta laysarka: goynta laysarka waxay ku lug leedahay hagida laydhka leysarka ee la kontoroolo dusha birta, taasoo keenaysa dhalaalid iyo samaynta barkad dhalaalaysa. Birta dhalaalaysa waxay nuugtaa tamar badan, taas oo dedejinaysa habka dhalaalka. Gaaska cadaadiska sarreeya ayaa loo isticmaalaa in lagu afuufo walxaha dhalaalay, abuurista dalool. Laydhka laysarka wuxuu dhaqaajiyaa daloolka isagoo raacaya walxaha, samaynta tolida goynta. Hababka daloolinta leysarka waxaa ka mid ah daloolinta garaaca wadnaha (daloolada yaryar, saamaynta kulaylka oo yar) iyo daloolinta qarxinta (daloolooyin waaweyn, kala daadsanaan badan, aan ku habboonayn goynta saxda ah).Mabda'a qaboojiyaha ee qaboojiyaha laysarka ee mashiinka goynta laysarka: nidaamka qaboojiyaha laysarka ayaa qaboojiya biyaha, bamka biyuhu wuxuu keenaa qaboojinta heerkulka hooseeya mashiinka goynta laysarka. Marka biyaha qaboojintu ay ka qaadaan kulaylka, way kululaadaan oo ku noqdaanqaboojiyaha laysarka, halkaas oo mar labaad la qaboojiyey oo dib loogu soo celiyay mishiinka goynta laysarka.