O le toe faaleleia o afi o taavale e aofia ai le suia o valves, pistons, cylinder liners, po o cylinders, grinding shafts, ma isi mea faapena. E tusa ai ma le tulaga masani o faleoloa 4S lautele, e manaʻomia ona suia i ni masini lagolago e 4, o lona uiga, pistons, piston rings, valves, valves, valves oil seals, valve guides, crankshaft shingles, connecting rod shingles, timing belts, ma tensioning wheels.
Afai e fa'atulaga le taimi o le filifili, e tatau ona sui le filifili taimi, le mea e fa'amau ai, e le gata i le masini, le lima o le silini, le au olo, le paipa malulu, ae e mana'omia fo'i ona sui le afifi toe fa'aleleia, le fa'amaufa'ailoga suāu'u pito i luma pi'o, le fa'amaufa'ailoga suāu'u pito i tua pi'o, le fa'amaufa'ailoga suāu'u camshaft, le pamu suāu'u, ma isi valve su'esu'e, ma isi mea fa'apena, o nisi taimi e mana'omia fo'i ona sui mea fa'aopoopo mai fafo e pei o le tisiketi clutch, ma isi mea fa'apena. I se aotelega, e tatau ona sui vaega e le o mautinoa e toe fa'aleleia ai le afi ina ia mautinoa le fa'atinoga o le afi.
