Ukulungiswa kwenjini yemoto kuhlanganisa kakhulu ukushintshwa kwamavalvu, amapiston, ama-cylinder liners, noma amasilinda, imiphini yokugaya, njll. Ngokwezinga lezitolo ezijwayelekile ze-4S, zidinga ukushintshwa ngamadivayisi amane asekelayo, okungukuthi, amapiston, amasongo episton, amavalvu, izivalo zikawoyela wevalvu, iziqondiso zamavalvu, ama-crankshaft shingles, ama-connecting rod shingles, amabhande esikhathi, amasondo okucindezela.
Uma uchungechunge lubekwe ngesikhathi, kuyadingeka ukushintsha uchungechunge lwesikhathi, i-tensioner, ngaphezu komshini wokugaya, isilingi, umgodi wokugaya, umsele wokucindezela okubandayo, kodwa futhi kudingeka kushintshwe iphakheji yokulungisa, uphawu lwamafutha olugobile lwangaphambili, uphawu lwamafutha olugobile lwangemuva, uphawu lwamafutha e-camshaft, ipompo yamafutha, i-valve yocwaningo oluningi, njll., ngezinye izikhathi kudingeka futhi kushintshwe izesekeli zangaphandle njenge-clutch disc, njll. Ngamafuphi, kuyadingeka ukushintsha izingxenye ezingaqinisekile ukulungisa injini ukuqinisekisa ukusebenza kwenjini.
