Removal Of Needle Bar Crank Rod Assy / Thread Take-Up Lever; Removal Of Bh Spring - Brother XM3700 Service Manual

Application of Disassembly

2-3 Removal of Needle bar crank rod assy / Thread take-up lever

1. Remove the needle bar crank rod assy 1 from the shaft of the needle bar
block 2.
2. Remove the screw 1, and then remove the thread take-up lever 3 from
the needle bar crank of the needle bar crank rod assy 1.
*Key point
• The screw is reverse threaded.

2-4 Removal of BH spring

1. Remove the screw 1, and then remove the BH spring 1 from the base
holder assy.
Upper shaft, Needle bar and Presser foot unit
3 - 33
2
1
1 1
3
1
1