1. Vibration.
Kana screw yaita ngura, haibvumidzwe kubviswa nechisimba nechipanera. Tinya screw nechipanera, pwanya sundries munzvimbo ine ngura, shandura sikururu kuruboshwe uye kurudyi nechipanera, uye ipapo unogona kubvisa screw. Yakabviswa.
2. Moto.
Kana sikuruu yacho yaita ngura zvakanyanya, unogona kushandisa welding yemagetsi kuti oxidize screw, kupisa screw red, wobva wadonhedza mamwe mafuta ekuzora mukati megomba rescuru, mira kwechinguva, wozobvisa sikururu nechipanera.