Silvercrest SON 90 A1 User Manual (English)

Questions and Answers:

T
taylorjeremyAug 19, 2025
Why are the seams wrinkling when I use my Silvercrest SON 90 A1?
- H
  hernandezalexanderAug 19, 2025
  Seams may wrinkle because the thread tension is too high; adjust the thread tension. Also, check if the yarn has not been correctly threaded and thread the yarn correctly. A blocked thread can also cause this, so check the course of the individual threads. Finally, the differential feed motion may not be adjusted correctly; in this case, correctly adjust the differential transport.
C
Cassidy BensonAug 21, 2025
What to do if my Silvercrest SON 90 A1 Sewing Machine needles break?
- D
  Dylan EllisAug 21, 2025
  Needles may break if they are bent, blunt, or damaged at the points; fit new needles. Also, ensure the needles are correctly inserted into the retainers. Avoid pulling the material too heftily; instead, carefully guide the material with both hands.
M
Meghan HarrisAug 23, 2025
Why are stitches irregular on my Silvercrest SON 90 A1 Sewing Machine?
- R
  Rhonda BrownAug 23, 2025
  Irregular stitches can occur if the thread tension is not correct; correct the thread tension. Also, check the course of the individual threads, as the thread may be trapped.
A
Andrew ThorntonAug 26, 2025
Why are stitches being omitted by my Silvercrest SON 90 A1 Sewing Machine?
- R
  Rebecca StarkAug 26, 2025
  Stitches might be omitted if the needles are bent, blunt, or damaged; fit new needles. Also, ensure the needles are correctly inserted into the retainers. Finally, check the course of the individual threads, as the yarn may not have been correctly threaded.
L
Linda BeckerAug 28, 2025
What to do if material edges ruffle themselves when using my Silvercrest SON 90 A1 Sewing Machine?
- K
  Kathryn LopezAug 28, 2025
  If material edges ruffle, it may be due to too much material in a stitch. Try altering the seam width.
J
Jake WattsAug 30, 2025
What to do if my Silvercrest Sewing Machine material is not cut off cleanly?
- G
  Glenn BarrettAug 30, 2025
  If the material is not cut off cleanly, the blades may be blunt or improperly fitted. Try exchanging the blade or reinsert it correctly.
R
Raymond ThomasSep 1, 2025
Why does the thread keep breaking on my Silvercrest SON 90 A1?
- J
  jamieharrellSep 2, 2025
  The thread may break on your Silvercrest Sewing Machine due to several reasons. It could be that the yarn has not been correctly threaded, so ensure you thread it correctly. Also, the thread tension might be too high; in this case, reduce the thread tension. Another possible cause is that the needles are not correctly inserted; make sure to insert the needles into the retainers correctly.
K
Kimberly WheelerSep 4, 2025
What to do if needles break on my Silvercrest SON 90 A1?
- M
  Melissa HurleySep 4, 2025
  If the needles break on your Silvercrest Sewing Machine, it could be due to a few reasons. The needles might be bent, blunt, or damaged at the points; if so, fit new needles. Also, the needles may not be correctly inserted; ensure you insert them into the retainers correctly. Another cause could be pulling the material too heftily; carefully guide the material with both hands.
K
Kimberly ParkerSep 6, 2025
How to fix seams that cause wrinkles on Silvercrest SON 90 A1 Sewing Machine?
- S
  Stacie SingletonSep 6, 2025
  Wrinkled seams on your Silvercrest Sewing Machine can occur for several reasons. The thread tension might be too high, so adjust the thread tension. Also, the yarn may not have been correctly threaded; make sure to thread the yarn correctly. Another possibility is that the thread is blocked; check the course of the individual threads. Finally, the differential feed motion may not be adjusted; correctly adjust the differential transport.
T
tinaholmesSep 8, 2025
Why are stitches omitted on my Silvercrest SON 90 A1?
- J
  James LarsenSep 9, 2025
  Stitches may be omitted on your Silvercrest Sewing Machine for a few reasons. The needles might be bent, blunt, or damaged at the points; if so, fit new needles. Also, the needles may not be correctly inserted; ensure you insert the needles into the retainers correctly. Another cause could be that the yarn has not been correctly threaded; check the course of the individual threads.

Silvercrest SON 90 A1 Specifications

General

Brand	Silvercrest
Model	SON 90 A1
Category	Sewing Machine
Language	English

Summary

Items Supplied

Technical Data

Description of the Appliance

Bringing the Upper Blade into a Rest Position

Explains how to move the upper blade for specific seam types or easier adjustment.

Needle Information

Discusses the types of needles compatible with the machine and their selection.

Upper Looper Element

Describes the function and insertion of the upper looper element for specific stitches.

Opening the Front Flap

Preparation

Connecting the Foot Pedal

Guide on plugging in the foot pedal and connecting the machine to a power source.

Controlling the Sewing Speed

How to adjust the sewing speed using the foot pedal.

Safety Switch

Explains the safety feature that prevents operation with the front flap open.

Fitting the Waste Container

Instructions for attaching the waste container to collect fabric scraps.

Removing Needle(s)

Inserting Needle(s)

Instructions for correctly inserting new needles into the machine.

Operating the Handwheel

Guidance on the correct direction to turn the handwheel.

Adjusting the Thread Tree

Threading

General Instructions for Threading

Essential safety precautions and general tips before starting the threading process.

Threading the Upper Looper Thread (Red)

Detailed steps for threading the red yarn through the upper looper.

Threading the Lower Looper Thread (Yellow)

Threading Yarn for the Right Needle (Green)

Threading Yarn for the Left Needle (Blue)

Changing Threads (Binding Together)

Set the Stitch Length

How to adjust the stitch length for different fabric types and desired results.

Setting the Seam Width

Methods for determining the width of the seam by adjusting needle position.

...by Using the Right or Left Needle

Explains seam width based on using the right or left needle individually.

Setting the Seam Width Adjustment Knob

Adjust Sewing Foot Pressure

Differential Transport

Manner of Operation

How the differential transport system works by using two sets of feed racks.

Gathered Overlock Seam - Settings

How to set the differential transport for creating gathered seams.

Stretched Overlock Seam - Settings

How to set the differential transport for creating stretched seams.

Free Arm Sewing

Overlock Seams

Roll Hemmings

Specific settings and techniques for creating roll hems.

Binding-off and Sample Sewing

Recommended Tension Settings

Guidelines for setting thread tensions for different stitch types and materials.

2-Thread Overcast Chain Stitch (Overlock)

2-Thread-Overcast-Stitch

3-Thread Chain Stitch (Overlock)

3-Thread - Flatlock Seam

3-Thread Overcast Chain Stitch (Overlock)

3-Thread Safety Stitch, Highly Elastic, Imitated

4-Thread Safety Stitch, Highly Elastic, Imitated

Roll Hemmings

3-Thread Rolled Hem

Specific settings for a 3-thread rolled hem, often using a bushy yarn.

3-Thread Upper Looper Overcast Rolled Hem

How to perform a 3-thread rolled hem using the upper looper.

2-Thread Rolled Hem

2-Thread Lower Looper Overcast Rolled Hem

How to perform a 2-thread rolled hem using the lower looper.

Flatlock Decorative Seams

Flatlock Seam as Assembly Seam

How to use flatlock seams to join two pieces of fabric.

Flatlock Seam as Decorative Seam

Overlock Blind Hems

Pin Tucks

Sewing Corners

Outer Corners

How to sew sharp outer corners with the overlock machine.

Inner Corners

How to sew neat inner corners on fabric.

Tips and Tricks

Using Pins

Best practices for using pins safely to avoid damaging the machine.

Secure Empty Threads

Method for securing loose thread chains to prevent unraveling.

Seam Reinforcement

How to strengthen seams using a reinforcing strip.

Edging

Instructions for creating decorative edgings using the machine.

Maintenance and Cleaning

Cleaning and Lubrication

Regular cleaning steps and lubrication points to maintain the machine.

Exchanging the Lower Blade

Guide on how to safely replace the lower blade when it becomes dull.

Storage

Disposal

Warranty and Service

Importer

Troubleshooting

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Silvercrest SON 90 A1 User Manual

Table of Contents

Questions and Answers:

Silvercrest SON 90 A1 Specifications

Summary

Items Supplied

Technical Data

Description of the Appliance

Bringing the Upper Blade into a Rest Position

Needle Information

Upper Looper Element

Opening the Front Flap

Preparation

Connecting the Foot Pedal

Controlling the Sewing Speed

Safety Switch

Fitting the Waste Container

Removing Needle(s)

Inserting Needle(s)

Operating the Handwheel

Adjusting the Thread Tree

Threading

General Instructions for Threading

Threading the Upper Looper Thread (Red)

Threading the Lower Looper Thread (Yellow)

Threading Yarn for the Right Needle (Green)

Threading Yarn for the Left Needle (Blue)

Changing Threads (Binding Together)

Set the Stitch Length

Setting the Seam Width

...by Using the Right or Left Needle

Setting the Seam Width Adjustment Knob

Adjust Sewing Foot Pressure

Differential Transport

Manner of Operation

Gathered Overlock Seam - Settings

Stretched Overlock Seam - Settings

Free Arm Sewing

Overlock Seams

Roll Hemmings

Binding-off and Sample Sewing

Recommended Tension Settings

2-Thread Overcast Chain Stitch (Overlock)

2-Thread-Overcast-Stitch

3-Thread Chain Stitch (Overlock)

3-Thread - Flatlock Seam

3-Thread Overcast Chain Stitch (Overlock)

3-Thread Safety Stitch, Highly Elastic, Imitated

4-Thread Safety Stitch, Highly Elastic, Imitated

Roll Hemmings

3-Thread Rolled Hem

3-Thread Upper Looper Overcast Rolled Hem

2-Thread Rolled Hem

2-Thread Lower Looper Overcast Rolled Hem

Flatlock Decorative Seams

Flatlock Seam as Assembly Seam

Flatlock Seam as Decorative Seam

Overlock Blind Hems

Pin Tucks

Sewing Corners

Outer Corners

Inner Corners

Tips and Tricks

Using Pins

Secure Empty Threads

Seam Reinforcement

Edging

Maintenance and Cleaning

Cleaning and Lubrication

Exchanging the Lower Blade

Storage

Disposal

Warranty and Service

Importer

Troubleshooting

Related product manuals