1) motsin sitiyari mara daidaito;
2) Matsayi mara kyau na dabaran gaba;
3) Babban adadin karkatar da dabaran;
4) Tsangwama motsi na hanyar watsawa;
5) axle da nakasar firam;
6) rashin daidaito taurin hagu da dama dakatarwa, gazawar abin sha, gazawar jagora, da sauransu.
(1) Duban bayyanar: duba ko gazawar abin girgiza, idan yayyo mai ko gazawar, yakamata a maye gurbinsa;duba ko maɓuɓɓugan dakatarwa na hagu da dama sun karye ko ba daidai ba, idan akwai maye gurbin maɓuɓɓugan dakatarwa;duba ko haɗin maɓuɓɓugan dakatarwa ba shi da sako-sako, hanyar watsa sitiyadi ba ta da tsangwama ta motsi, idan wani ya kamata a kore shi;
(2) goyan bayan gefen gatari na tsakiya da na baya, ƙafafun gaba tare da katako na katako, fara injin kuma a hankali sanya abin hawa cikin kayan aiki mai sauri, ta yadda injin tuƙi ya isa saurin girgizawar jiki. .Idan girgizar jiki da sitiyarin, ana haifar da shi ta hanyar tsarin watsawa.
(3) duba ko ƙafafu na gaba suna da son zuciya: goyi bayan gatari na gaba, sanya allura mai zage-zage a gefen gaba, kunna dabaran a hankali, duba ko gefen ya yi girma sosai, idan haka ne, a maye gurbin bakin;
(4) Cire dabaran gaba, duba ma'auni mai ƙarfi na dabaran gaba akan ma'auni mai ƙarfi, kuma shigar da shingen daidaitawa gwargwadon adadin rashin daidaituwa;
(5) Idan cak ɗin da ke sama sun kasance na al'ada, to duba firam, nakasar axle, tare da kayan aikin daidaita dabaran gaba don dubawa da daidaita jeri na gaba.