Singer 9340 - User Manual

Questions and Answers

M
Misty RodriguezJul 31, 2025
Why does the upper thread keep breaking on my Singer 9340 Sewing Machine?
- M
  melissaschmidtJul 31, 2025
  The upper thread may break due to several reasons: * The machine might not be threaded correctly, so rethread it. * The thread tension could be too tight; reduce the thread tension. * The thread might be too thick for the needle; in this case, select a larger needle. * The needle might not be inserted correctly; remove and reinsert the needle with the flat side towards the back. * The thread could be wound around the spool holder pin; remove the spool holder and unwind the thread. * The needle might be damaged; replace it.
J
julielyonsAug 5, 2025
What to do if my Singer Sewing Machine is skipping stitches?
- J
  Jasmine CruzAug 5, 2025
  Skipped stitches can occur for several reasons: * The needle may not be inserted correctly; remove and reinsert it with the flat side towards the back. * The needle might be damaged; insert a new one. * The wrong size needle might have been used; choose a needle to suit the thread. * The foot may not be attached correctly; check and attach it correctly. * The machine might not be threaded correctly; rethread it.
S
stewartstephanieAug 10, 2025
What to do if the lower thread breaks on my Singer 9340 Sewing Machine?
- S
  Sean CochranAug 10, 2025
  If the lower thread breaks, it could be due to: * The bobbin case not being inserted correctly; remove and reinsert the bobbin case and pull on the thread to ensure it pulls easily. * The bobbin case being threaded wrong; check both the bobbin and bobbin case.
Z
Zachary EllisAug 14, 2025
What to do if the needle breaks on my Singer 9340 Sewing Machine?
- K
  Kimberly WardAug 14, 2025
  If the needle breaks, consider these possibilities: * The needle may be damaged, so insert a new one. * The needle might not be correctly inserted; ensure it is inserted correctly with the flat side towards the back. * The needle size may be wrong for the fabric; choose a needle to suit the thread and fabric. * The wrong foot may be attached; select the correct foot. * The needle clamp screw may be loose; use a screwdriver to firmly tighten the screw. * The presser foot used may not be appropriate for the stitch you're using; attach the correct presser foot. * The upper thread tension might be too tight; loosen it.
K
kwilliamsAug 20, 2025
Why are my stitches loose on my Singer Sewing Machine?
- T
  Timothy LewisAug 20, 2025
  Loose stitches can be caused by: * The machine not being correctly threaded; check the threading. * The bobbin case not being correctly threaded; thread the bobbin case as illustrated. * Using the wrong needle/fabric/thread combination; the needle size must suit the fabric and thread. * Incorrect thread tension; correct the thread tension.
T
Teresa CaldwellAug 25, 2025
How to prevent seam gathering or puckering on my Singer Sewing Machine?
- D
  Denise KramerAug 25, 2025
  Seam gathering or puckering can occur if: * The needle is too thick for the fabric; select a finer needle. * The stitch length is adjusted wrong; readjust the stitch length. * The thread tension is too tight; loosen the thread tension.

Summary

Important Safety Instructions

Essential Safety Precautions

Critical warnings for safe operation, preventing hazards like electric shock and burns.

Principal Parts of the Machine

Machine Component Identification

Machine Control Buttons

Operation Buttons

Details buttons for start/stop, thread cutting, reverse, auto-lock, and needle position.

Function Buttons

Explains buttons for stitch width, length, mode selection, elongation, and mirror.

Selection Buttons

Details buttons for pattern selection, editing, memory storage, and clearing.

Connecting to Power Source

Power Connection Procedure

Step-by-step guide for safely connecting the sewing machine to the power supply.

Winding the Bobbin

Bobbin Winding Process

Detailed instructions for winding thread onto the bobbin correctly.

Inserting the Bobbin

Bobbin Case Insertion

Guide on how to properly insert the wound bobbin into the bobbin case.

Threading the Upper Thread

Upper Thread Path

Step-by-step guide for routing the upper thread through the machine.

Using the Needle Threader

Automatic Needle Threading

Lower Thread Management

Bringing Up Bobbin Thread

Process for drawing the bobbin thread up to the needle plate.

Thread Cutting

Starting Sewing Operations

Using the Start;Stop Button

Guide on initiating and stopping sewing with the start/stop button.

Using the Foot Control

Instructions for controlling sewing speed with the foot pedal.

Thread Tension Settings

Adjusting Thread Tension

Guidance on setting and adjusting upper and lower thread tension for optimal stitches.

Changing the Presser Foot

Attaching and Removing Feet

Steps for safely attaching and removing presser feet.

Needle, Fabric, and Thread Matching

Selection Guide

Recommendations for matching needle size, fabric type, and thread.

Needle and Feed Dog Adjustments

Replacing the Needle

Instructions for regularly replacing the sewing machine needle.

Adjusting Feed Dogs

Operation Buttons Overview

Start;Stop and Thread Cutter

Using the primary buttons for starting, stopping, and trimming threads.

Reverse and Auto-Lock Functions

Using reverse stitching and auto-lock for reinforcement and securing stitches.

Needle Up;Down Position Control

Function Buttons Explained

Stitch Width and Length Adjustment

Adjusting stitch width and length for various patterns.

Mode Selection and Elongation

Selection Buttons for Patterns

Direct Pattern Selection

Memory and Editing Functions

Needle Position and Stitch Length

Adjusting Needle Position

Adjusting Stitch Length

Zigzag Stitch Adjustments

Zigzag Width Control

Zigzag Stitch Density

Overcasting Stitches

Using the Overcasting Foot

How to use the overcasting foot for edge finishing.

Overcasting with All-Purpose Foot

Sewing Blind Hems

Blind Hemming Techniques

Step-by-step guide for creating professional blind hems.

Button Sewing Guide

Attaching Buttons

Instructions for sewing buttons securely onto fabric.

Buttonhole Sewing

Standard Buttonhole Creation

Detailed steps for sewing automatic buttonholes.

Bar Tack Stitch

Reinforcing with Bar Tacks

Eyelet Stitch

Creating Eyelets

Darning Stitch

Repairing Fabric Tears

Zipper Insertion Techniques

Centered Zipper Installation

Steps for inserting a zipper into a centered seam.

Lapped Zipper Installation

Guide for sewing a lapped zipper for a neat finish.

Narrow Rolled Hem Foot

Creating Rolled Hems

Gathering Fabric

Creating Gathers

Gather and Attach in One Step

Free Motion Sewing

Darning and Embroidery

Even Feed Foot

Ensuring Even Fabric Feed

Zipper and Non-Stick Feet

Invisible Zipper Foot

Piping Foot

Stitching and Creating Piping

Scallop Stitch

Scallop Hem Creation

Scallop Edging

Elongation Function

Stretching Stitch Patterns

Mirror Image Function

Mirroring Stitch Patterns

Using the Twin Needle

Twin Needle Setup and Sewing

Instructions for threading and sewing with a twin needle.

Memory Functions

Combining Patterns

Adding Patterns or Letters

Editing Patterns

Clearing Patterns or Letters

Recalling Memorized Patterns

Warning Functions

Error Message Displays

Interpreting animation messages indicating machine problems.

Beeping Alerts

Machine Maintenance

Cleaning the Screen and Surface

Cleaning the Hook Mechanism

Instructions for cleaning the hook race and feed dogs for smooth operation.

Troubleshooting Guide

Common Sewing Problems

Solutions for issues like thread breaks, skipped stitches, and needle breaks.

Machine Operation Issues

Addressing problems like distorted patterns, noisy operation, and machine stoppage.

Stitch Adjustment Reference Chart

A & B Group Patterns

C Group Patterns

Singer 9340 Specifications

General

Type	Electronic
Automatic Needle Threader	Yes
LCD Screen	Yes
Speed Control	Yes
Adjustable Stitch Length/Width	Yes
One-Step Buttonhole	Yes
Speed	750 stitches per minute
Voltage	110V
Buttonhole Styles	6
Bobbin Type	Drop-in
Presser Feet	All-Purpose Foot, Zipper Foot, Buttonhole Foot, Satin Stitch Foot, Blind Hem Foot, Overcasting Foot