Ukusetshenziswa kwamaketanga kanye nezinyathelo zokuphepha

1. Ithwebulakufanele kube bushelelezi futhi flat, futhi akukho amaphutha afana nemifantu, imiphetho ebukhali, ukushisa ngokweqile, njll.
2. Akuvunyelwe ngokuphelele ukusebenzisa insimbi ekhonjiwe noma amaketanga ensimbi. Umzimba we-buckle ungakhiwa ngensimbi ebulewe, futhi iphinikhodi ye-shaft ingenziwa ngomshini ngemuva kokufojwa kusuka ku-bar material.
3. Iintamboakufanele ibhobolwe noma ishiselwe ukuze ilungiswe. Ngemuva kokuthi umzimba we-buckle kanye nephinikhodi ye-shaft kukhubazekile unomphela, akukho ukulungiswa okuvunyelwe.
4. Lapho usetshenziswa, hlola umzimba we-buckle kanye ne-bolt, futhi uvikele ukugqoka okukhulu, ukuguquguquka nokuqhekeka kokukhathala.
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7. Ukusetshenziswa kweimijondolongeke yeqe umthwalo ophephile ophephile.