Yadda ake zabar sarkar keke

Ya kamata a zaɓi zaɓin sarkar keke daga girman sarkar, aikin canjin saurin da tsayin sarkar.Duban bayyanar sarkar:
1. Ko sassan sarkar ciki/na waje sun lalace, fashe, ko lalata;
2. Ko fil ɗin ya lalace ko ya juya, ko an yi masa ado;
3. Ko abin nadi ya fashe, ya lalace ko ya wuce kima;
4. Ko haɗin gwiwa yana kwance kuma ya lalace;
5. Shin akwai wani sauti mara kyau ko girgizar al'ada yayin aiki?Shin yanayin lubrication na sarkar yana cikin yanayi mai kyau?