1. Nyuma yo gushyushya ubushyuhe bwa mbere, igomba gufungurwa inshuro nyinshi kugirango ikureho burundu umwuka muri sisitemu yo gutanga amavuta no kuzuza umuyoboro wa peteroli lisansi.
2. Ubushyuhe bugomba gupimwa mbere yo gukoreshwa.Witondere witonze umutekano wibihuza byose mugihe cyo kugerageza.Niba hari imyotsi isohoka, urusaku rudasanzwe rwo gutwikwa cyangwa umunuko wa lisansi, uzimye umushyushya hanyuma ucomeke fuse.Irashobora gukoreshwa gusa nyuma yo kugenzurwa nabakozi babigize umwuga.