Brother LS2-B892 User Manual (English)

Questions and Answers:

A
Ashley FullerJul 30, 2025
What to do if loops appear in seam Brother LS2-B892 Sewing Machine?
- S
  scottcoleJul 30, 2025
  If loops are appearing in the seam of your Brother Sewing Machine, several factors could be the cause. First, check the needle: if the tip is burred, replace it. Ensure the needle hole faces the correct direction upon installation. If the needle is too thin for the thread, use a thicker one. Also, make sure that the upper thread tension isn't too weak and the thread tension spring isn't too weak; adjust them as needed. Increase the operating range for the thread take-up spring if it's too small. If the thread path isn't smooth, polish it with fine-grain sandpaper. Ensure the bobbin isn't overfilled (should be no more than 80% full) and that the bobbin winding tension is appropriate.
P
Patricia AndradeAug 9, 2025
How to fix upper thread not tight Brother LS2-B892 Sewing Machine?
- D
  Douglas ParksAug 9, 2025
  If the upper thread is not tight on your Brother Sewing Machine, it could be due to several reasons. The upper thread tension may be too weak, or the lower thread tension may be too strong; in this case, adjust either the upper or lower thread tension accordingly. If the thread tension spring is too weak, adjust its tension. If the operating range for the thread take-up spring is too small, increase it. Finally, verify that the clearance between the needle plate and the inner rotary hook stopper is correct; if not, adjust the position of the opener.
R
ronald47Aug 19, 2025
Why is lower thread not tight Brother Sewing Machine?
- A
  Alexandra BurchAug 19, 2025
  If the lower thread is not tight on your Brother Sewing Machine, it might be because the lower thread tension is too weak, or the upper thread tension is too strong. Adjust the lower or upper thread tension accordingly.

Brother LS2-B892 Specifications

General

Brand	Brother
Model	LS2-B892
Category	Sewing Machine
Language	English

Summary

SAFETY INSTRUCTIONS

Safety indications and their meanings

Explains meanings of safety indications and symbols used in the manual and on the machine.

Symbols

Explains the meaning of caution, prohibition, and mandatory symbols used in the manual.

Notes on safety

Provides general safety notes regarding machine operation and environment.

Environmental requirements

Details environmental conditions like temperature, humidity, and light for safe operation.

Installation

5-1. Rubber cushion

Instructions for installing rubber cushions into the work table.

5-2. Oil pan

Steps to install the oil pan and poly oiler under the work table.

5-3. Machine head

Details on installing the machine head, including hinges, rubber cushions, and cord cover.

5-4. V-belt

Procedure for installing and adjusting the V-belt tension.

5-5. Belt guard

Instructions for installing the belt guards on the machine head and motor.

5-6. Operation panel (-705)

Steps for installing the operation panel and set plate onto the machine head.

5-7. Air unit (-705)

Instructions for installing the air unit and connecting air tubes.

5-7-1. Installation

Specific installation steps for the air unit.

5-7-2. Adjusting the air pressure

Guide for setting the air pressure on the air unit to 0.5 MPa.

5-8. Cotton stand

Instructions for assembling and installing the cotton stand.

5-9. Knee lifter (-005)

Steps for installing and adjusting the knee lifter lever.

5-10. Knee switch (-705)

Instructions for installing and adjusting the knee switch.

5-11. Ground wire connections (-705)

Procedure for connecting the ground wire to the machine and motor.

LUBRICATION

Lubrication

Instructions for filling the oil tank and oil hole for machine lubrication.

Checking

Procedure to check the rotary hook lubrication amount using a check sheet.

CHECKING THE MACHINE PULLEY ROTATING DIRECTION

ADJUSTING THE NEEDLE STOP POSITION (-705)

Adjusting the needle up stop position

Steps to adjust needle stop position when needle is up, ensuring 'C' mark visibility.

Adjusting the needle down stop position (thread trimming signal position)

Steps to adjust needle stop position when needle is down, ensuring set screw visibility.

PREPARATION BEFORE SEWING

9-1. Installing the needle

Detailed guide on how to install the needle correctly in the machine.

9-2. Removing the bobbin

Steps to safely remove the bobbin from the rotary hook.

9-3. Winding the lower thread

Instructions for winding the lower thread onto the bobbin correctly.

9-4. Installing the bobbin

Procedure for inserting the wound bobbin into the bobbin case.

9-5. Threading the upper thread

Guide on how to thread the upper thread through the machine.

9-6. Adjusting the stitch length (-005)

How to adjust stitch length using the feed adjustment dial.

9-7. Adjusting the stitch length (-705)

Adjusting stitch length using different dials for specific models.

Setting two different stitch lengths

How to set and switch between two stitch length settings.

9-8. Alternating presser foot movement amount

Adjusting the lift amount of the alternating presser foot.

9-9. Using the manual switches (-705)

Explanation of how to use manual switches for reverse and presser foot movement.

9-10. Using the knee switch (-705)

How to use the knee switch for lifting presser foot or controlling movement.

SEWING

10-1. Sewing

Basic instructions on how to start and perform sewing.

10-2. Backtacking

How to perform backtacking using the reverse lever or switch.

THREAD TENSION

11-1. Adjusting the thread tension

Guide to adjusting upper and lower thread tension for balanced stitches.

11-2. Adjusting the presser foot pressure

How to adjust the presser foot pressure for different materials.

11-3. Adjusting the trailing length after thread trimming (-705)

Adjusting the thread length after trimming for better performance.

STANDARD ADJUSTMENTS

13-1. Adjusting the machine head

General guide for adjusting various parts of the machine head.

13-1-1. Adjusting the thread tension spring

How to adjust the position and tension of the thread tension spring.

13-1-2. Adjusting the feed dog height

Procedure to adjust the height of the feed dog.

13-1-3. Adjusting the needle bar height

Steps to adjust the height of the needle bar.

13-1-4. Adjusting the needle and rotary hook timing

Crucial steps for synchronizing needle and rotary hook.

13-1-5. Adjusting the needle guard position

How to adjust the needle guard's position relative to the needle.

13-1-6. Adjusting the needle and feed mechanism timing

Steps to synchronize needle and feed mechanism timing.

13-1-7. Adjusting the opener position and timing

Adjusting the opener's position and timing relative to the rotary hook.

13-1-8. Adjusting the presser foot height

How to adjust the height of the outer presser foot.

13-1-9. Adjusting the alternating presser foot movement amount

Setting the maximum lift amount for the alternating presser foot.

13-1-10. Adjusting the presser foot timing

Synchronizing the presser foot's movement with the needle.

13-2. Adjusting the thread trimmer (-705)

Procedures for adjusting the thread trimmer mechanism.

13-2-1. Adjusting the fixed knife position

Setting the correct position for the fixed knife blade.

13-2-2. Adjusting the knife timing position

Adjusting the timing position of the driving and fixed knives.

13-2-3. Adjusting the driving knife height

Setting the correct height for the driving knife blade.

13-2-4. Adjusting the driving knife stop position

Setting the correct stop position for the driving knife.

13-2-5. Adjusting the driving knife operating position

Adjusting the driving knife's operating position.

13-2-6. Adjusting the thread holding spring position

Setting the position of the thread holding spring.

13-2-7. Adjusting the thread trimming timing

Synchronizing the thread trimming action.

13-2-8. Adjusting the tension release amount

Adjusting the opening amount of the tension discs.

13-3. Adjusting the rotary hook lubrication amount

How to adjust the amount of oil for the rotary hook.

13-4. Replacing the timing belt

Steps for replacing the timing belt.

TROUBLESHOOTING

17-1. Machine head

Troubleshooting common problems related to the machine head.

17-2. Thread trimming errors (-705)

Specific troubleshooting steps for thread trimming errors.

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Brother LS2-B892 User Manual

Table of Contents

Questions and Answers:

Brother LS2-B892 Specifications

Summary

SAFETY INSTRUCTIONS

Safety indications and their meanings

Symbols

Notes on safety

Environmental requirements

Installation

5-1. Rubber cushion

5-2. Oil pan

5-3. Machine head

5-4. V-belt

5-5. Belt guard

5-6. Operation panel (-705)

5-7. Air unit (-705)

5-7-1. Installation

5-7-2. Adjusting the air pressure

5-8. Cotton stand

5-9. Knee lifter (-005)

5-10. Knee switch (-705)

5-11. Ground wire connections (-705)

LUBRICATION

Lubrication

Checking

CHECKING THE MACHINE PULLEY ROTATING DIRECTION

ADJUSTING THE NEEDLE STOP POSITION (-705)

Adjusting the needle up stop position

Adjusting the needle down stop position (thread trimming signal position)

PREPARATION BEFORE SEWING

9-1. Installing the needle

9-2. Removing the bobbin

9-3. Winding the lower thread

9-4. Installing the bobbin

9-5. Threading the upper thread

9-6. Adjusting the stitch length (-005)

9-7. Adjusting the stitch length (-705)

Setting two different stitch lengths

9-8. Alternating presser foot movement amount

9-9. Using the manual switches (-705)

9-10. Using the knee switch (-705)

SEWING

10-1. Sewing

10-2. Backtacking

THREAD TENSION

11-1. Adjusting the thread tension

11-2. Adjusting the presser foot pressure

11-3. Adjusting the trailing length after thread trimming (-705)

STANDARD ADJUSTMENTS

13-1. Adjusting the machine head

13-1-1. Adjusting the thread tension spring

13-1-2. Adjusting the feed dog height

13-1-3. Adjusting the needle bar height

13-1-4. Adjusting the needle and rotary hook timing

13-1-5. Adjusting the needle guard position

13-1-6. Adjusting the needle and feed mechanism timing

13-1-7. Adjusting the opener position and timing

13-1-8. Adjusting the presser foot height

13-1-9. Adjusting the alternating presser foot movement amount

13-1-10. Adjusting the presser foot timing

13-2. Adjusting the thread trimmer (-705)

13-2-1. Adjusting the fixed knife position

13-2-2. Adjusting the knife timing position

13-2-3. Adjusting the driving knife height

13-2-4. Adjusting the driving knife stop position

13-2-5. Adjusting the driving knife operating position

13-2-6. Adjusting the thread holding spring position

13-2-7. Adjusting the thread trimming timing

13-2-8. Adjusting the tension release amount

13-3. Adjusting the rotary hook lubrication amount

13-4. Replacing the timing belt

TROUBLESHOOTING

17-1. Machine head

17-2. Thread trimming errors (-705)

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