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221,222, 301
There are two tiny screws on the side of the bobbin case. When you are holding the bobbin case with the bobbin down the screw on the left is the screw - 200592 - that holds the tension spring on.
The screw on the right is the adjustable screw -201016 - for bobbin tension, The screws are NOT the same.
![](/v/vspfiles/assets/images/SCREW BOBBIN CASE.JPG) These are really Tiny!
For following Singer machines :
221 featherweight, 221-1, 222, 301 & 301A
Sometimes the spring on the bobbin case can become damaged. These are replaceable
Bobbin tension can be affected by an improperly wound bobbin, especially a bobbin that is ‘over-wound’ with too much thread. This will keep the bobbin from turning freely in the bobbin case.
- Compatible with Babylock Sewing Machine Models:
BL1550, BL1556, BL16, BL18, BL18A, BL2160, BL22, BL23, BL23A, BL37, BL40, BL6150, BL6200, BL6300, BL66, BL6600, BL67, BL6700, BL6800, BL7800, BL8800, BLCC, BLCC2, BLDC, BLDC2, BLG, BLG2, BLG2-NZ, BLL, BLL2, BLN, BLQC, BLQC2, BLR, BLR2, BLR3, BLSO, BLSR, ESE, ESE2, ESG, ESG2, ESG3, ESI, ESI2, ESL, ESN, ESP & INT.- Compatible with Brother Sewing Machine Models:
BC1000, CE4000, CE5000PRW, CS100T, CS6000, CS6000i, CS6000T, CS8072, ES2000, EX660, HE120, LB6770 PRW, LS1217, LS1717, Innovís 40, Innovís 80, Innovís 1000, Innovís 1500D, Innovís 2500D, Innovís 4000D, Duetta 4500D, Quattro 6000D, Innovís 900D, NX200, NX250, NX400, NX450, NX450Q, NX600, NX650Q, PC210, PC210PRW, PC2800, PC3000, PC420, PC420PRW, PC5000, PC6000, PC6500, PC7000, PC7500, PC8000, PC8200, PC8500, PC8500D, PE300S, PE400D, PS1000, PS1250, PS1800, PS1950, Pacesetter PS21, PS2100, PS2200, PS2300, PS2500, QC1000, SE-270D, SE350, ULT2001, ULT2002D, ULT2003D, VX1120, VX1140, VX1250, VX1400, XL2121, XL2230, XL2600, XL2600i, XL2610, XL3022, XL3025, XL3027, XL3030, XL3100, XL3200, XL3500, XL3500T, XL3510, XL5500, XL5600, XL5700, XL6562, XR37 & XR46C- Singer Sewing Machine Models:
3709, 6510, 7350 & 7463 and any other top loading bobbin machine that uses the standard snap on foot.
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