YFB4 letoto la ho phatloha ha lerōle-mohato oa likarolo tse tharo tsa asynchronous motor ke enjene e koaletsoeng ka botlalo e iketsang fan-cooled squirrel-cage ea mekhahlelo e meraro ea asynchronous. E na le litšobotsi tsa boholo bo nyane, boima bo bobebe, ts'ebetso e ka tšeptjoang, ponahalo e ntle, joalo-joalo E boetse e na le ts'ebetso e phahameng, lerata le tlaase, ho sisinyeha ho nyenyane le ho phahama ha mocheso o tlase. E kholo, ts'ebetso e ntle haholo, sebopeho se tsoetseng pele le se utloahalang sa bopaki ba ho phatloha, ts'ebeliso e bolokehileng le e tšepahalang, jj.
Li-motors tse thibelang ho phatloha ha lerōle li loketse haholo-holo libakeng tseo ho tsona lerōle le tukang le leng teng meriana, masela, metallurgy, ho lokisa lijo-thollo, ho lokisa lijo, manyolo a lik'hemik'hale, koae, ho etsa pampiri, thepa ea maiketsetso, thepa ea mohaho, joalo-joalo.