1. Ngwa a bụ ihe owuwu, etiti ahụ. Ahụ dum dị elu igwe anaghị agba nchara, na draị ke ebiri mmiri na ebe a na-emefu nke ọma, iji kpochapụ ihe dị iche iche nke agba na ụdị akpụkpọ anụ, nke pụrụ iche maka usoro. Sistemụ na-ekpo ọkụ ma na-agbakwunye na interlin elu, Drum na Intercalition na ngwọta nke zuru oke nke kpo oku, na-egbu egbu na-ezu ike kpo oku ma na-ekpo ọkụ mgbe niile.
2 Enwere ike ịwepụta oge, na-atụgharị oge na mkpokọta oge yo-Yo Communitytent oge, ka ị ga-aghọta ọrụ a na-aga n'ihu ma ọ bụ nke na-aga n'ihu. Iji usoro ndọtị ngwa ngwa agbanwe, ma jiri eriri dị nro, ike nnyefe bụ nnukwu, na-adịgide adịgide.
3. A na-achịkwa igwe eji kpo oku eletriki, a na-achịkwa ngwa ngwa site na ọgụgụ isi site na Outtone na-ejikwa windo nke na-eme ihe nkiri dị na windo nke akpụkpọ anụ.
4
Usoro ịnya ụgbọ ala nwere ngwa ngwa na-agbanwe agbanwe, V-Belt, (ma ọ bụ callung) na-agbagide na ọdụ nke ọsọ ọsọ (ma ọ bụ wheel ụkwụ) na drum.
Usoro ịnya ụgbọ ala a nwere uru ọrụ dị mfe na mkpọtụ, kwụsiri ike ma dị mma na mbido iwu ọsọ.
1. Wom & worm ọsọ ọsọ.
2. Obere wiil.
3. Nnukwu oche.
4. Drush ahụ.
