CHECK SPRING Singer 2315, 2330, 2502, 2504, 2515,

2530, 3317, 4830C,5805, 6305, 6310, 6314, 6318, 6620, 7211, 7212, 8220, CG500, CG550, CG590, HD110, SM14C,9802, 9803, 9805, 9806, 9808, 9810, 9812, 9814, 9816, 9818, 9824, 9828, 9832, 9836, 9850,9852, 9852-1, 9853-1, 9855, 9855-1,9858, 9858-1, 9860-1, 9868, 9868-1, 9876, 9876-1, 9936, 57815, 57817, 57820, 57825, CG500, CG550, CG590, CM17, CP17, FM17, FM22, HD102, HD105, HD110C 4832C