Injin da ke aiki a lokacin aiki zai bayyana abin da ke faruwa na jitter, a wannan lokacin maƙallin injin yana da matuƙar muhimmanci. Amfani da tallafin injin ba wai kawai zai iya daidaita matsayin injin ba, har ma ya bar injin ya guji jitter, don kare lafiyar injin yadda ya kamata, ta yadda mai shi zai iya tabbatar da tuƙi. A taƙaice, an raba tallafin injin zuwa nau'i biyu. Ɗaya shine tallafin juyi, ɗayan kuma shine manne ƙafar injin. Ana amfani da manne ƙafar injin ne musamman don gyara shaƙar girgiza. Maƙallin juyi nau'in manne ne na injin, wanda yawanci ana haɗa shi da injin a kan gatari na gaba na gaban jikin abin hawa. Bambancin da manne ƙafar injin na yau da kullun shine manne ƙafa wani manne ne da aka sanya kai tsaye a ƙasan injin, kuma tallafin juyi yana kama da bayyanar sandar ƙarfe da aka sanya a gefen injin. Haka kuma za a sami manne na manne na juyi a kan maƙallin juyi, wanda ke aiki azaman mai shaƙar girgiza. An tsara maƙallin injin don riƙe injin a wurinsa, don haka lokacin da wani abu ya faru da shi, ba zai riƙe shi da kyau ba. Sannan, idan injin yana aiki, tabbas za a sami matsalar jijjiga, kuma a cikin yanayin saurin gudu mai girma, ba tare da ambaton ba, ba kawai tare da sautin "boom" mara kyau ba, kalmomi masu mahimmanci za su sa injin ya faɗi.
