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”

DB2−B773, B774, B7740, B7741 11/21
2002.1
For topstitching [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
J 183566-001 151622-201 S13264-001 159288-201 159301-001
Fixed presser foot
Exchange parts assy
for medium materials
Collared shirt etc., stitching neck,
stitching cuffs, side stretching
type
JD 183571-001 153984-201
Fixed presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
φ1.6 Oblique type teeth
P1.15
Collared shirt etc., stitching neck,
stitching cuffs, side stretching
type (Max. stitch width 12 mm)
“JD” is “J” with the thickness
presser (183066-001).
S 183578-101 ★159443-201
Standard (-3)
★S13256-001
Standard (-3)
★159295-201
Standard (-3)
★159305-001
Standard (-3)
Free presser foot
Exchange parts assy
for medium materials
φ1.6 Parallel type teeth
P1.15 Shirt, blouse, etc., for small sharp
turns.
SG1.5 183620-101 S13761-001 159292-101 S15074-001
Free presser foot
Exchange parts assy
for thin and medium
materials
Shirt, blouse, dress, jacket etc.
Topstitching edge (with stitch
guide spring 1.5mm)
SG2 183621-101 S13765-001
Free presser foot
Exchange parts assy
for thin and medium
materials
Skirt, slacks, topstitching belt etc.,
various stitching (stitch width
2mm)
SG3 183622-101 S13771-001
Free presser foot
Exchange parts assy
for thin and medium
materials
Oblique type teeth
φ1.6 Oblique type teeth
P1.15
Skirt, slacks, various stitching
(with stitch guide spring 3mm)

DB2−B773, B774, B7740, B7741 12/21
2002.1
For topstitching [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
SG5 183623-101 S13769-001 S13256-001 159292-101 S15074-001
Free presser foot
Exchange parts assy
for thin and medium
materials
φ1.6 Oblique type teeth
P1.15 Skirt, slacks, topstitching belt etc.,
various stitching (stitch width
5mm)
JD 183571-001 S07671-101 159295-201 159305-001
Fixed presser foot
Exchange parts assy
for medium materials
Men’s and lady’s wear etc.,
stitching sleeve caps, basting
under sleeve, seaming back
center, joining shoulder, sewing
sides
S 183578-101 S07670-101
Fixed presser foot
Exchange parts assy
for medium materials
Oblique type teeth
φ1.6 Parallel type teeth
P1.15
Men’s and lady’s wear etc.,
stitching sleeve caps, basting
under sleeve, seaming back
center, joining shoulder, sewing
sides
“SSD” is SS with the thickness
presser (183066-001).
SG1.5 2 3 mm
Guide plate
SG4 5 6 mm
Guide plate
S13768-001 S13770-001

DB2−B773, B774, B7740, B7741 13/21
2002.1
For gathering [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
B 183559-101 ★151281-101
Standard (-6)
★S13257-001
Standard (-6)
★S15094-001
Standard (-6)
★S15071-001
Standard (-6)
Exchange parts assy
for medium materials
φ1.9
Attaching yoke, attaching cuffs
(gathering), basting front lining to
facing (effect of uneven material
feeding of different materials)
Lady’s and children’s wear etc.
B22 S13782-201
Free presser foot
Heavy materials
Cross-shaped type
teeth
φ2.2
Parallel type teeth
The needle plate has a bigger
needle hole for heavy materials.
L 183568-101 153575-101 S13268-001 159292-101 S15074-001
Free presser foot
Exchange parts assy
for medium materials
Parallel type teeth φ1.6 Oblique type teeth
P1.15
Attaching yoke,
Attaching cuffs
(Gathering)
Basting front lining to facing
(Effect of uneven material feeding
different materials)
Lady’s and children’s wear etc.
Part name Part code Part name Part code
Gathering separator assy 183627-001 Separator S3 assy 183214-401
Separator S13369-001 Separator 159321-101
For rolled-hemming
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
E 183562-001 151290-101 S13259-001 159294-001 159304-001
Free presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
ED - S49401-001 S49417-001
Exchange parts assy
for medium materials
Free presser foot
Parallel type teeth
φ1.6 Parallel type teeth
P1.15 Skirt, One-piece dress etc.
For rolled-hemming

DB2−B773, B774, B7740, B7741 14/21
2002.1
For rolled-hemming [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
EDA - S56022-001 S56024-001
Exchange parts assy
for medium materials
Free presser foot
Parallel type teeth φ1.6 Parallel type teeth
P1.15
Skirt, One-piece dress etc.
For rolled-hemming
N 183582-101 S01658-201 S13261-001 159288-201 159301-001
Free presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth φ1.6 Oblique type teeth
P1.15
Dress, Skirt, Coat, One-piece
dress etc.
For rolled-hemming
(Stitch width 1.5 mm left
compensating foot)
For difficult-to-feed materials [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
C 183560-101 151286-101 S13257-001 159292-101 S15073-001
Exchange parts assy
for medium materials
φ1.6 Parallel type teeth
P1.6
C12 159293-101
Medium materials
φ1.2
Seaming princess line, Stitching
sleeve caps of double cloth
sleeve, Topstitch pocket mouth,
Lady’s blazer, Men’s slacks etc.
C22 S13783-201
Heavy materials
Free presser foot
Cross-shaped type
teeth
φ2.2
The needle plate has a bigger
needle hole for heavy materials
D 183561-001 151288-101 S13258-001 159288-201 159301-001
Free presser foot
Exchange parts assy
for thin and medium
materials
Cross-shaped type
teeth φ1.6 Oblique type teeth
P1.15
Ski suit, Leather jumper, Raincoat
etc.
Sewing under sleeve, Joining
shoulder, Sewing sides, setting
sleeves

DB2−B773, B774, B7740, B7741 15/21
2002.1
For sewing zipper (Exclusive right) [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
GC 183625-101 S13777-001 S13778-001 159292-101 S15074-001
Fixed presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth φ1.6 Oblique type teeth
P1.15 Skirt etc.
For sewing conceal fastener
GRM 183576-001 151293-101 S13262-001 159297-001 156247-001
Free presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
With groove
φ1.8 Parallel type teeth
P1.15 One-piece dress, Skirt, Slacks
etc.
For sewing zipper
GS 183584-001 S04541-101 S13263-001 S04540-001 S00846-001
Free presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
With groove
φ1.8 For prevent twisting
One-piece dress, Dress, Skirt,
Sportswear etc.
For sewing zipper
GR 183564-001 151293-101 S13262-001 159296-101
Free presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth Skirt, Jumper, One-piece dress,
Slacks etc.
For sewing zipper
KR 183577-001 156617-101 S13267-001
Fixed presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
φ1.8
Parallel type teeth
P1.15
Sportswear, Ski anorak, Leather
jumper etc.
For sewing zipper

DB2−B773, B774, B7740, B7741 16/21
2002.1
For sewing zipper (Exclusive left) [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
GL 183565-001 151293-101 S13261-001 159298-101 S00865-001
Exchange parts assy
for medium materials
φ1.8 Parallel type teeth
P1.15
GLM 183591-001 159299-001 159306-001
Exchange parts assy
for medium materials
Free presser foot
Cross-shaped type
teeth
With groove
φ1.8 Parallel type teeth
P1.6
One-piece dress, Skirt etc.
For sewing zipper
K 183567-001 153170-101 S13265-001 159298-101 S00865-001
Fixed presser foot
Exchange parts assy
for medium materials
Free type teeth Sportswear, Ski anorak, Leather
jumper etc.
For sewing zipper
KL7 183583-001 S01941-201 S13266-001
Fixed presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth
φ1.8 Parallel type teeth
P1.15
School trousers etc.
For sewing zipper
For binding
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
H 151299-101 S13256-001
Free presser foot
Medium materials
Oblique type teeth
Goods on the
market
Goods on the
market
Dress, One-piece dress, Coat,
Blazer, Best etc.
For binding

DB2−B773, B774, B7740, B7741 17/21
2002.1
For binding [DB2−B773, B774, B7740, B7741]
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
HC S14315-101 S13256-001
Free presser foot
Medium materials
Oblique type teeth
Goods on the
market
Goods on the
market
One-piece dress, Jacket, Best
Dress etc.
For binding
For restrain cloth from flapping
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
M 183569-001 153978-101 S13269-001 159288-201 159301-001
Free presser foot
Exchange parts assy
for medium materials
Oblique type teeth φ1.6 Oblique type teeth
P1.15
Skirt, One-piece dress, Jumper
etc.
For sewing zipper
Stitching, Topstitching edge
Effective type for puckering
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
P 183585-101 S04550-101 S13270-001 S13398-001 S13364-001
Free presser foot
Exchange parts assy
for thin materials
Cross-shaped type
teeth φ1.6 Parallel type teeth
P1.15
Lady’s wear, Flimsy dress,
Blouse etc.
This type possesses middle
peculiarity of pucker and
stretching
For piping
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
SP 183624-101 S13774-001 S15093-001 159292-101 S15074-001
Free presser foot
Exchange parts assy
for thin and medium
materials
Oblique type teeth φ1.6 Oblique type teeth
P1.15 Dress, One-piece dress, Coat,
Blazer etc.
For piping

DB2−B773, B774, B7740, B7741 18/21
2002.1
For concealed-seaming waist belt
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
WB 183553-001 S01258-101 S13271-001 S01256-001 S01261-001
Free presser foot
WB device complete
for medium materials
Cross-shaped type
teeth φ1.8 Parallel type teeth
P1.15
Slacks, Skirt
For concealed-seaming waist belt
Conceal from seamy side type
WJ 183626-001 S13779-001 S13780-001 159296-101 S00864-001
Fixed presser foot
Exchange parts assy
for medium materials
Cross-shaped type
teeth φ1.8 Parallel type teeth
P1.15 This type is one, brought needle
location close to inside belt
Special type
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
BT 183574-101 151281-101 S13257-001 159291-101 S15072-001
Free presser foot
Exchange parts assy
for thin materials
Cross-shaped type
teeth φ1.2 Rubber feed dog
Quilt materials, Nylon, Taffeta,
Lining cloth, Lady’s thin materials
etc.
For prevent to make cloth cut, this
type is added urethane to
“S15071-001”.
LT 183575-101 153575-101 S13268-001 159292-101 S15075-001
Fixed presser foot
Exchange parts assy
for thin materials
Parallel type teeth φ1.6 Rubber feed dog
Quilt materials, Nylon, Taffeta,
Lining cloth, Lady’s thin materials
etc.
For prevent to make cloth cut, this
type is added urethane to
“S15074-001”.

DB2−B773, B774, B7740, B7741 19/21
2002.1
Special type
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
T 183586-201 S04554-201 S13256-001 S15094-001 S15071-001
Free presser foot
Exchange parts assy
for medium materials
Men’s wear, Lady’s wear etc.
Stitching sleeve cap, Sewing
under sleeve, Seaming under
sleeve, Seaming back center,
Joining shoulder, Effective for
materials difficult to slide.
Teflon presser
TL S07035-201
Free presser foot
Medium materials
Topstitching edge, Transparent
presser foot for piping
TP S07196-201
Free presser foot
Medium materials
Oblique type teeth φ1.9
Parallel type teeth
P1.15
Transparent presser foot for pin
tack
For B7740, 25 mm sensor
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
S13357-001 159301-001
A
12S
φ1.2
S13356-001
A
16S
Whole A type
φ1.6
Oblique type teeth
P1.15

DB2−B773, B774, B7740, B7741 20/21
2002.1
For B7740, 25 mm sensor
Gauge type Presser foot assy Upper feed dog Needle plate Feed dog Use
S13359-101 S15071-001
B
12S
φ1.2
S13358-101
B
16S
Whole B, P type
φ1.6
Oblique type teeth
P1.15
S13361-101 S15073-001
Parallel type teeth
P1.6
S15074-001
C
12S
φ1.2
Oblique type teeth
P1.15
S13360-101 S15073-001
Parallel type teeth
P1.6
S15074-001
C
16S
Whole C, SG type
φ1.6
Oblique type teeth
P1.15