Brother DB2-B773 User manual

DB2−B773, B774, B7740, B7741 1/21

2002.1

DB2-B773 



B774

DB2-B7740 



B7741

Single Needle Adjustable Top and Bottom

Feed Lock Stitcher

Single Needle Adjustable Top and Bottom

Feed Lock Stitcher

with Thread Trimmer

Single Needle Adjustable Top and Bottom

Feed Lock Stitcher

with Thread Trimmer and Ply Sensor

Single Needle Adjustable Top and Bottom Feed Lock Stitcher

with Thread Trimmer and Programmable Shirring Device

Specifications

Model DB2-B773 B774 B7740 B7741

Subclass – □□3–□□6

Use Thin medium heavy materials

Sewing speed 4,500 rpm

Max. stitch length 5.0 mm

Feed method Top & bottom feed

Height of presser foot

Knee : 13 mm

Manual : 6 mm

Automatic : 8 mm

Needle bar stroke 31.0 mm

Thread take-up stroke 57.4 mm

Height of feed dog 0.8 mm

Max. upper feed amount 6.0 mm 8.0 mm

Intermediate gathering – {

Needle DB ×1 #11

DB2−B773, B774, B7740, B7741 2/21

2002.1

Thread

trimmer Ply sensor Programmable

shirring device Application

B773 - - -

B774 ○--

Men’s wear: seaming sleeves, attaching facings, sewing up whole

linings, seaming back centers, seaming backs, lining

centers, seaming side, matching shoulders

Slacks: seaming sleeves, matching shoulders, attaching fasteners,

seaming sides, attaching and seaming sleeves, rolled-

hemming linings, attaching yokes, attaching cuffs, joining

waists

Leather jumper: seaming necks, attaching facing at back centers, lining

jeresy fonts, lining jeresy rounds

Ski anorak: sewing inside cotton for front & back shirts, front & back

shirts, sides, necks, outer & inner sleeves and front & back

bodies, attaching fasteners

B7740 ○○ -Same applications as B773 and B774.

Especially attaching pockets, stitching collars.

B7741 ○-○Same applications as B773 and B774.

Especially attaching sleeves (easing).

DB2−B773, B774, B7740, B7741 3/21

2002.1

DB2-B773-00

DB2-B774-0

DB2-B7740- 2

DB2-B7741-46

Gathering

3 – (Standard)

6○(Gathering type)

Shirring

3 – (Standard)

6○(Shirring type)

Function

Thread

trimmer Thread wiper Quick back Automatic presser

foot lifter

3○–○–

4○○ ○ –

9○○ ○ ○

(Solenoid)

Function

Thread

trimmer Thread wiper Quick back Automatic presser

foot lifter

4○○ ○ –

9○○ ○ ○

(Solenoid)

Shirring device

3 – (Standard)

6○(Shirring type)

Function

Thread

trimmer Thread wiper Quick back Automatic presser

foot lifter

4○○ ○ –

9○○ ○ ○

(Solenoid)

DB2−B773, B774, B7740, B7741 4/21

2002.1

Feedguidedevice [DB2−B773, B774]

Ref. No. Part name Part code Q’ty

1 FG guide assy S16125−001 1

Feed guide base device [DB2−B773, B774]

Ref. No. Part name Part code Q’ty

2 FG guide base assy S16126−001 1

DB2−B773, B774, B7740, B7741 5/21

2002.1

Waistbeltdevice 　　　　

　　　　 [DB2−B773, B774]

Ref. No. Part name Part code Q’ty

3 WB device assy 183553−001 1

DB2−B773, B774, B7740, B7741 6/21

2002.1

Edge guide device [DB2−B774, B7740, B7741]

DB2−B773, B774, B7740, B7741 7/21

2002.1

Edge guide device [DB2−B774, B7740, B7741]

Ref. No. Part name Part code Q’ty

1 Edge guider set S16040-009 1

1-1 Guide base assy 154635-001 1

1-1-1 Rubber cushion 154637-000 3

1-1-2 Reflection plate 154638-000 1

1-2 Guide plate lower 154639-001 1

1-3 Guide plate upper 154640-001 1

1-4 Guide cover 154641-009 1

1-5 Guide block 154642-001 1

1-6 Screw, pan M3.57 – 40 ×10 062671-012 2

1-7 Bearing support 154643-001 2

1-8 Screw, flat M3.57 102843-001 4

1-9 Guide bearing (R) 102843-004 2

1-10 Guide bearing (L) 154644-001 2

1-11 Screw, pan M3.57 – 40 ×7 154645-001 8

1-12 Space screw 062670-712 2

1-13 Knob 154646-001 2

1-14 Closing screw 154647-000 1

1-15 Spring 154648-001 3

1-16 Screw 2.38 154649-001 6

1-17 Adjust screw 122771-001 1

1-18 Point adjust shaft 154650-001 1

1-19 Spring 154651-001 1

1-20 Lever guide 156453-000 1

1-21 Screw, flat M2.38 100191-005 2

1-22 Screw, flat M3.57 102843-004 1

1-23 Screw, pan M3.57 – 40 ×5 062670-512 2

1-24 Washer, plain S3.5 025350-132 2

1-25 Guide bracket 154654001 1

1-26 Auxiliary upper plate 154655-000 1

1-27 Upper plate collar 154656-001 1

1-28 Spacer 154657-001 1

1-29 Screw 154623-001 1

1-30 Screw, flat M2.38 100191-005 2

1-31 Washer, spring 2 – 3.5 028350-242 2

1-32 Screw, pan M3.57 – 40 ×7 062670-712 2

1-33 Closing lever supporter S15904-001 1

1-34 Closing lever S15905-001 1

1-35 Screw, pan M3.57 – 40 ×8 062670-812 1

1-36 Screw, pan M3.57 – 40 ×4 062670-412 1

DB2−B773, B774, B7740, B7741 8/21

2002.1

Gauge parts list

For topstitching [DB2−B773, B774, B7740, B7741]

Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use

A 183558-101 151277-201 S13256-001 159288-201 159301-001

Free presser foot

Exchange parts assy

for thin and medium

materials

Men’s and lady’s wear etc.,

stitching sleeve caps, basting

under sleeves, seaming back

center, joining shoulders, sewing

sides

AC1 183579-101 159447-201

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(1mm right compensating foot)

AC1.5 183615-101 S13745-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(1.5mm right compensating foot)

ACL1 183587-101 S14317-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(1mm left compensating foot)

AC2 183580-101 S01041-201

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(2mm right compensating foot)

ACL2 183588-101 S14321-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Oblique type teeth φ1.6

Oblique type teeth

P1.15

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(2mm left compensating foot)

DB2−B773, B774, B7740, B7741 9/21

2002.1

For topstitching [DB2−B773, B774, B7740, B7741]

Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use

AC3 183581-101 S01044-201 S13256-001 159288-201 159301-001

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(3mm right compensating foot)

ACL3 183589-101 S14323-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(1mm　left compensating foot)

AC5 183616-101 S13748-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(5mm right compensating foot)

ACL6 183617-101 S13754-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(6mm left compensating foot)

ACL7 183618-101 S13758-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(7mm right compensating foot)

AC9 183619-101 S13751-101

Free presser foot

Exchange parts assy

for thin and medium

materials

Oblique type teeth φ1.6

Oblique type teeth

P1.15

Dress, shirt, blouse etc.,

topstitching edge, sewing pocket

(9mm left compensating foot)

DB2−B773, B774, B7740, B7741 10/21

2002.1

For topstitching [DB2−B773, B774, B7740, B7741]

Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use

AM 159421-201 S13256-001 159295-201 159305-001

Free presser foot

Medium materials

AS 183573-101 154698-201

Free presser foot

Exchange parts assy

for medium materials

φ1.6

Parallel type teeth

P1.15 Dress, shirt, knitshirt ect., sewing

pocket, sword polo-stitching,

topstitching front

AT 183572-101 154445-201 159289-001 159301-001

Free presser foot

Exchange parts assy

for medium materials

Oblique type teeth

φ1.2 Lady’s wear etc., stitching sleeve

caps of face and lining cloth,

seaming back center, joining

shoulder, sewing sides

A22 S13781-201

Heavy materials Whole A type

φ2.2

Oblique type teeth

P1.15

The needle plate has a bigger

needle hole for thick materials

F 183563-001 151292-201 S13260-001 159295-201 159305-001

Fixed presser foot

Exchange parts assy

for medium materials

Collared shirt etc., topstitching

neck, stitching cuffs, side pucker

type

FD 183570-001 153983-101

Fixed presser foot

Exchange parts assy

for medium materials

Cross-shaped type

teeth φ1.6

Parallel type teeth

P1.15

Collared shirt etc., topstitching

neck, stitching cuffs, side pucker

type (max. stitch width 12mm)

“FD” is “F” the thickness presser

(183066-001) to “F”

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