1. Kev ua haujlwm siab, vim tias huab cua tshuab tshuaj xyuas hom kev pub mis thiab ntsuas phoo mechanism yog kev sib xyaw ua ke, txuag lub sijhawm ntawm kev tshem tawm cov ntsia hlau. Lub tshuab tsuas yog yuav tsum tau ua raws li qhov kev zov me nyuam kom nruj cov ntsia hlau rau txhua qhov ntsia hlau. Nws tuaj yeem nruab nrog ob lub tshuab hluav taws xob. Siv lub hau ntswj kom nruj 2 screws ua ke ntau zaus kom ua tau zoo dua.
2. Qhov ntau ntawm cov khoom muaj nyob rau hauv dav, thiab nws muaj peev xwm xauv cov khoom beveled, sib sib zog nqus qhov screws, thiab countersunk qhov screws zoo thiab stably. Ntau qhov kev npaj them nyiaj xauv tuaj yeem teeb tsa raws li qhov yuav tsum tau ua, haum rau cov tuam txhab nrog ntau yam khoom tshwj xeeb.
3. Cov ntsia hlau muaj ntau dua thiab qhov yuav tsum tau muaj torque loj dua, me ntsis loj dua cov khoom siv ntsia hlau.