1. Kugwedezeka.
Sikuluu ikakhala ndi dzimbiri, siloledwa kuichotsa mwamphamvu ndi wrench. Gwirani sikuluu ndi wrench, phwanyani zinthu zina pamalo oti dzimbiri, tembenuzani sikuluu kumanzere ndi kumanja ndi wrench, kenako mutha kuchotsa sikuluu. Yachotsedwa.
2. Moto.
Ngati sikuru ili ndi dzimbiri kwambiri, mungagwiritse ntchito welding yamagetsi kuti muwonjezere screw, kuwotcha screw yofiira, kenako kuponya mafuta odzola m'malo otseguka a screw, dikirani kwakanthawi, kenako kuchotsa screw ndi wrench.