Brother EF4-V51 - User Manual

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SERVICE

MANUAL

FOR

V SERIES

OVERLO

SEWING

MACHINE

EF4-V41 •

V51

• MA4-

V61

EF4-V71 •

V81

• MA4-

V91

EF4-V72 • V82 • MA4

-V

•

From the library of: Superior Sewing Machine & Supply LLC

Main Page

Table of Contents2
Specification List )7
Mechanical Descriptions )19
- Needle Bar Mechanism19
Under Looper Mechanism20
Over Looper Mechanism21
Double Chain Stitch Looper Mechanism (V61, V91, V92)22
Lid Knife Mechanism23
- [§] Presser Foot Mechanism24
Feed Mechanism26
[I] Upper Feed Mechanism28
Lubrication32
Disassembly)33
- Covers33
IZ1 Presser Foot Mechanism34
Knife Mechanism35
Under Looper Mechanism36
Lid over Looper Mechanism37
- [§] Double Chain Stitch Looper Mechanism38
Needle Bar Mechanism39
[I] Feed Mechanism40
II] Upper Feed Mechanism41
(Assembly)44
- Upper Feed Mechanism44
IZ1 Feed Mechanism48
Needle Bar Mechanism51
1!1 under Looper Mechanism54
- Over Looper Mechanism55
Double Chain Stitch Looper Mechanism57
Knife Mechanism60
[I] Presser Foot Mechanism62
(Standard Adjustments)65
Adjusting the Height and Location of the Needle65
Lz1 Adjusting the under Looper, the Movable Needle Guard, and Needle Guard (F)66
Rn1 Adjusting the over Looper68
Adjusting the Chain Stitch Looper, Chain Stitch Needle Guards (B) and (F)69
- [§] Adjusting the Backward and Forward Movement of the Chain Stitch Looper70
- [§] Adjusting the Presser Foot71
Adjusting the Height of the Knife74
Adjusting the Height of the Feed Dog75
Adjusting the Positions of the Needle-Thread Take-Up and the Needle Thread Guide78
Adjusting the Position of the Looper Thread Take-Up79
Ill] Adjusting the Horizontal Feeding Timing (Position of the Level Feed Eccentric Wheel)79
H2L Adjusting the Standard Position of the Horizontal Feeding (Level Feed Adjust Arm)80
Adjusting the Horizontal Feed Amount80
Ml Adjusting the Standard of the Vertical Feeding81
Adjusting the Height of the Upper Feed Bar82
Adjusting the Clearance between the Upper Feed Dog and the Lower Feed Dog83
Lll1 Adjusting the Vertical Feed Amount of the Upper Feed Dog84
Adjusting the Differential Ratio85
- Adjusting the Clearance between the Cloth Plate and the Needle Plate86
- ( Troubleshooting )87
[)] Needle Thread Breakage (Overlockingl87
Lz1 Looper Thread Breakage88
Rn1 Needle Breakage91
Improper Thread Tension91
Improper Chaining-Off91
- Puckering92
Slippage Cloth93
Double Scooping (Overlocking)93
- ( Needle Size and Upper Looper )94
- ( Materialthicknessandstitchwidth )95
- Timing Gauge Table96

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Brother EF4-V51 Specifications

General

Brand	Brother
Model	EF4-V51
Category	Sewing Machine
Language	English

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