CHECK SPRING 301Z (CS301)Description:Fits B661, 469FA, 601, 608,SZ702, B651, 900, 1900, SL6220, 301Z, R900, R1900, 303SS,504, 514, 580, 590, 603, 653,663, 670, 6714, 693, 701, 703,753, 763, 793, FA524, FA580,FA590, FA602, FA670, FA6702,FA6714, FA6724, FA693, R1570,R1570FB.SM 6702, 6714, 6724, FA6702, FA6714, FA6724, SY SL6220Morse Sewing Machine Models:4100. Riccar Sewing Machine Models:R250, R900, R1570, R1570FB & R1900.Simplicity Sewing Machine Models: SL6220.White Sewing Machine Models:1315, 165, 167, 263, 265, 1620, 1630 & 1655CS301
