Brother International CB3-B917 Service Manual - Page 15
Tension release mechanism
View all Brother International CB3-B917 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 15 highlights
1.MECHANICAL DESCRIPTIONS 1-8-3. Button clamp opener [B917A] Size adjustment plate Button clamp opener Claw adjustment plate Button clamp lever Button clamp opener claw Button clamp Button clamp plate cam opener lever 129s 130s Returns to original position 1-9. Tension release mechanism Thread tension (Tightens on final stitch only) Auxiliary tension (Opens at each stitch) Main tension (Thread tension is always kept.) Disconnects 131s Slider Rocking 132s Needle bar drive lever Slider Final stitch (B916A : non) During machine Machine stop operation 133s Machine stopped Sewing Final stitch B917A B916A Thread tension O O O -> X -> O O -> X -> X Auxiliary tension O Opens at each stitch Differs according to needle bar position Main tension X X X O-Tension discs open X-Tension discs close 9 CB3-B916A/B917A