· Cov twj tso kua mis tsheb, cov khoom siv ua pa, cov kav roj, cov qhov hluav taws xob.
· Cov iav, cov ncej tsav, cov li qub, cov txiv ntoo ntawm lub qia valve, cov bearings, cov camshafts, cov impellers.
· Qhov ntsaws, hloov,Cov nyees khawm thiab cov khoom siv nias rau hauv, relay, lub tshuab ntxhua khaub ncaws pulley, daim kab xev cassette thiab lub log tsev.
· Lub thav duab txhawb nqa, lub hau, daim txhuam cev ntawm lub thav duab, nrog rau cov khoom ntawm lub moos, lub koob yees duab, thiab lwm yam cuab yeej ua kom raug.
