Umshini wokuhlikihla iyithuluzi eliwumshini elisika iphepha elibanzi noma ifilimu libe yimicu emincane eminingi futhi livame ukusetshenziswa emishinini yokuphrinta neyokupakisha. Ngaphambilini, i-clutch yempushana kazibuthe emshinini wokuhlinza ibingakwazi ukusebenza ngesivinini esikhulu-isivinini esikhulu sokungqubuzana kwempushana kazibuthe phakathi nokusebenza kwakungase kukhiqize amazinga okushisa aphezulu, kufinyeze ubude bayo bempilo. Ezimweni ezimbi kakhulu, kungabangela umshini ukuthi ugxume, kuvimbe ukusebenza futhi kube nomthelela omkhulu ekusebenzeni kahle kokukhiqiza.
Uhlelo lokulawula lwendabuko lomshini wokuhlinza lusebenzisa injini enkulu ukushayela ukuhlehlisa nokukhulula amashafu. I-clutch yempushana kazibuthe ixhunywe ku-rewind futhi ukhulule ama-shafts. Ukulungiswa kwamanje ku-clutch yempushana kazibuthe kulawula ukumelana okukhiqizwa i-clutch, ngaleyo ndlela kulawula ukushuba kwangaphezulu kwento. I-magnetic powder clutch kanye nebhuleki ama-actuator akhethekile ahambisa i-torque ngempushana kazibuthe egcwalisa igebe lokusebenza. Ukushintsha amandla kazibuthe kulungisa isimo sikazibuthe sempushana, ngaleyo ndlela kulungiswa itorque edlulisiwe. Angasetshenziselwa ukulawulwa kwesivinini esingenasinyathelo ukusuka kuqanda ukuya kusivinini esivumelanisiwe, okuwenza afanelekele-ukushuna okuhle-kububanzi besivinini kanye nezinhlelo zokulawula isivinini samandla aphansi{7}} namaphakathi{8}. Zibuye zisetshenziswe ezinhlelweni zokudonsa umoya noma zokuhlehlisa, lapho umthetho wamanje usetshenziswa ukuze kugcinwe ukungezwani okuqhubekayo phakathi nenqubo yokusonta ngokulungisa i-torque. Isici esiyinhloko somshini wokusika ukuthi i-clutch yamagnetic powder isebenza njengedivayisi yokumelana. Ngokulawulwa kwesistimu, i-voltage ye-DC iphuma ukulawula ukumelana okukhiqizwa yi-clutch yempuphu kazibuthe. Inzuzo eyinhloko ukuthi iyidivayisi ye-passive futhi ingakwazi ukulawula ukungezwani okuncane.