Brother CB3-B913 Instruction Manual Download Page 9 | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Summary of Contents for CB3-B913

Page 1: ...INSTRUCTION MANUAL FOR BROTHER CB3 B913 Chain Stitch Buttoning Machine BROTHER INDUSTRIES LTD NAGOYA JAPAN From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...Motor Pulley I Setting up the Machine I Installing the Button Tray 2 LUBRICATION AND TRIAL OPERATION 2 I Oiling 2 2 Trial Operation 2 CORRECT OPERATION 3 Longitudinal and Transversal Feed Positioning 3 Button Insertion 4 Changing the Number of Stitches 4 Needle and Thread 4 l J u i Needle Installing 4 Q T hreading 4 1 Thread T ension 5 Adjusting eedle Thread Length from Needle Eye after Sewing 5 A...

Page 3: ...e of those In case of using a commercial table drill holes as shown below shown below Power requirements Motor Single phase 4P 250 W motor Three phase 4P 250 W motor Motor Pulley Select the correct motor pulley from the table below which sui ts the power source frequency of your area Source Machine Motor pulley frequency speed Outside diameter Pulley 50 Hz 1 500 rpm 75 mm N 75 pulley 60Hz 1 500 rp...

Page 4: ...button tray legs 0 from the parts box insert them into the mounting holes in the bed and fasten them with the screws f 2 Fit the button tray onto the button tray legs O and fasten it with the screws 0 LUBRICATION AND TRIAL OPERATION 1 Oiling Be sure to pour a drop or two of oil into each of oiling points indicated by arrows before starting your sewing machine Trial Operation 1 Switch the power on ...

Page 5: ...e posi tion representing the button hole spacing 2 Loosen the nut f and set the pointer 8 to the position representing the button hole spacing 1 Loosen the hexagonal bolt 0 remove the feed plate A f take the feed plate 8 out of the parts box and install it tem porari ly with the hexagonal bolt 2 Loosen the set screw 0 push the adjusting plate 0 all the way and retighten the set screw 0 3 Set the l...

Page 6: ... as follows Needle and Thread Needle Size of thread Kind of thread 9 100 to 1 80 Cotton silk 11 80 to 60 II II 14 60 to 40 II II 16 40 to 30 II 18 30 to 24 II II 20 30 to 16 II II Select a needle and thread by referring to the above table 3 Use a TQ X 1 needle for sewing flat buttons on a TQ X 7 needle for shank buttons Needle Installing 1 8 stitches The figure at left shows the case of 8 stitches...

Page 7: ...usting screw 0 I When the needle falls to the lowest position the highest of the four needle bar reference lines will be flush with the bottom end of the needle bar lower bushing 0 2 Remove the face plate loosen the needle bar holder screw f and raise or lower the needle bar as appro priate l In case a TQ X 7 needle is used the second lowest of the reference lines wi ll be flush with the same 12 N...

Page 8: ... on the groove cam 8 with that on the looper shaft f 2 Loosen the screw 8 and align the reference line on the thread looper triangle cam 8 with that on the looper shaft f IZJ Button Clamp Lifter Adjustment a 2 Turn the pulley by hand to raise the When raising or lowering the button needle bar until the top of the needle clamp by means of the pedal bar 0 is 44 to 48 mm above the top 1 Remove the sc...

Page 9: ...eedle a nd looper looper Needle bar height Needle bar height Adjust needle bar incorrect height Stitches skip T oo g reat a clearance Clearance between be tween needle a nd needle and needle guard Adjust needle guard needle guar d Remaining thread Remaining thread Adjust remaining length too short length thread length Sub tension disc floats Tension disc float Adjust sub tension disc improperly fl...

Page 10: ... 118 913 192913 1 02 Printed in Japan From the library of Superior Sewing Machine Supply LLC ...

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