Yin amfani da na'ura mai jujjuya kowane motsi dole ne ya duba, tsaftace kayan aikin injin, yin aiki mai kyau na kulawar yau da kullum na aikin gyaran na'ura don cimma daidaito, tsabta, lubrication, aminci. (I) Kiyaye bayyanar kayan aikin injin da kyau, tsabta, babu rigar rawaya, mai, tsatsa da ...
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