Ni ukubera iki imirongo ihumye ihindagurika nyuma yo kuzunguruka?

1. Guhitamo imirongo ihumye ni bibi.Ibi birashoboka niba umubyimba ugomba kuzunguruka uri munsi yubunini ntarengwa bwo kuzunguruka bwimpumyi.

2. Ubwiza bwimpumyi ubwabwo.Iki kibazo gishobora kubaho mugihe ubwinshi bwumwobo wimbere wumutwe wa rivet burenze 0.15mm, cyangwa niba umutwe wa rivet ushyizwe hamwe.