1. Tsuas yog ib tug me nyuam yuav tsum zaum ntawm txhua qhov kawg ntawm lub saw saw. Yog hais tias ob tug me nyuam muaj qhov hnyav sib txawv, nrog lawv tham txog kev hloov mus rau ib tug me nyuam qhov hnyav sib xws, tsis yog muab lwm tus me nyuam rau ntawm qhov sib dua.
2. Ob tug me nyuam yuav tsum zaum ntawm ib sab ntawm lub saws tes, tsis txhob tig rov qab.
3. Kom tus me nyuam tuav ob txhais tes tuav ob txhais tes, tsis txhob sim kov hauv av los yog cia lawv ob txhais tes dai. Muab ob txhais taw rau ntawm qhov taw qhia taw. Yog tias tsis muaj footrests, cia ko taw dai ib txwm muaj, tab sis tsis txhob crouch hauv qab lub saws, vim qhov no tuaj yeem cuam tshuam taw thaum lub saw tilted downwards.
4. Khaws ib qho chaw nyab xeeb ntawm lwm tus menyuam yaus ua si ntawm lub saw. Tsis txhob muab koj txhais ko taw rau hauv ib lub tilting seesaw, sawv hauv nruab nrab ntawm lub crossbeams, los yog sim nce mus rau tilting seesaw.
