Brother DT4-B281 Manuals

Table of Contents

• 2

  Table of Contents
• 4

  [A] Model Plate Display
• 4

  [B] Specifications
• 6

  [C] Description of Mechanism
• 7

  Looper Mechanism
• 8

  II] Retainer Mechanism
• 9

  ~ Feed Mechanism
• 10

  Presser Foot Lift Mechanism
• 10

  Thread Release Mechanism
• 11

  Looper Thread Take-Up Mechanism
• 11

  Ffi] Puller Mechanism
• 12

  Lubrication
• 13

  [D] Disassembly Procedures
• 13

  [!] Cover
• 14

  Presser
• 14

  Feeding
• 15

  Retainer
• 16

  Needle Bar
• 17

  Upper and Lower Shafts
• 17

  [E] Assembly and Adjustment Procedures
• 17

  ITJ Upper and Lower Shafts
• 18

  Needle Bar
• 20

  Looper and Needle Guard
• 22

  Retainer
• 23

  Feeding
• 24

  Lej Presser
• 26

  Cover
• 27

  [F] How to Change the Roller
• 30

  [G] Disassembly and Assembly of the Bottom Metering Device
• 33

  [Li] Standard Adjustnlent
• 33

  [] Needle Bar Height
• 33

  II] Installation Position of Looper
• 34

  Needle and Looper Timing
• 35

  Clearance Between Needle and Needle Guard
• 35

  Installation Position of Retainer
• 36

  [§] Installation Position of Feed Dog
• 36

  Presser Foot Lift Stroke
• 37

  [[] Roller Feed Amount
• 38

  Thread Tension
• 39

  I ] Troubleshooting