文档介绍：老式脚踏缝纫机故障维修(roubleshooting)老式脚踏缝纫机故障维修(roubleshooting),faultfeatures:,theshuttleshuttleclampindoor,theneedleistoohigh,:lengthentheshuttleline,,,faultcharacteristics::needlerodhole,needlerodwear,needlerodconnectionscrewloose,:toreplacetheneedlebarsleeve,oroptionalneedlerod,,faultfeatures:afewneedles,:swingspindlewear,spindletipistooblunt,:swingtheshuttle,adjusttheheightoftheneedlebarortheneedleheight,,faultfeatures::,cannothookthewirering,sewingmaterial,,swing,:,shuttleorshuttlebedscanbereplacedandoverhauledifnecessary.