Singer 4166 Sewing Machine Manual

The Singer 4166 is a versatile mechanical sewing machine featuring 60 built-in stitches, automatic needle threader, adjustable stitch length and width, built-in buttonhole, free arm capability, drop-in bobbin system, and multiple presser feet. Powered by 120V AC, this machine is suitable for beginners and experienced sewers alike. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Setup and Installation 3. First-Time Operation 4. Specifications 5. Controls and Settings 6. Stitch Selection 7. Basic Sewing Operations 8. Maintenance & Cleaning 9. Accessories Included 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Mechanical sewing machine with 60 built-in stitches, automatic needle threader, free arm, drop-in bobbin system, and multiple presser feet.

FeatureDescription
Built-in Stitches60 stitches including utility, decorative, and stretch
Automatic Needle ThreaderEasy threading with push-pull mechanism
Drop-in BobbinTop-loading bobbin system with clear cover
Free ArmRemovable extension table for cylindrical sewing
Stitch Length ControlAdjustable from 0-4mm
Stitch Width ControlAdjustable up to 5mm for zigzag stitches
Built-in ButtonholeOne-step automatic buttonhole
Presser FeetIncludes all-purpose, zipper, buttonhole, and button sewing feet
Reverse StitchBuilt-in reverse sewing function
Power SwitchOn/off power control with built-in light

Setup and Installation

Unpack and inspect all contents. Place on stable, flat surface.

  1. Remove machine from packaging and remove all protective materials.
  2. Attach power cord to machine and plug into 120V AC outlet.
  3. Install foot controller and connect to machine.
  4. Attach extension table if using flatbed sewing surface.
  5. Install needle following proper orientation (flat side to back).
  6. Wind and install bobbin in drop-in bobbin case.

WARNING! Keep fingers away from needle area during operation. Always turn off power when threading or changing accessories.

First-Time Operation

Power on machine; follow basic setup procedures.

  1. Thread machine: Use automatic needle threader for upper threading.
  2. Load bobbin: Place bobbin in case with thread unwinding counterclockwise.
  3. Select stitch: Turn stitch selection dial to desired pattern.
  4. Adjust settings: Set stitch length and width as needed.
  5. Test sew: Use scrap fabric to test stitch quality and tension.
  6. Practice basic stitches: Straight stitch, zigzag, and buttonhole.

CAUTION! Always start with needle in highest position. Keep work area well-lit and organized.

Specifications

Controls and Settings

Main controls located on front and side of machine. Stitch Selection Dial: Turn to select from 60 built-in stitches. Stitch Length Dial: Adjust from 0-4mm. Stitch Width Dial: Adjust zigzag width up to 5mm.

Additional Controls: Reverse Stitch Button, Power Switch/Light, Bobbin Winder, Tension Dial, Presser Foot Lever, Hand Wheel.

Stitch Patterns: Basic, stretch, decorative stitches. Tension: Adjust thread tension for different fabrics. Bobbin Winding: Built-in bobbin winder with automatic stop.

Stitch Selection

60 built-in stitches organized by function and application.

  1. Straight Stitches: For basic sewing and seaming
  2. Zigzag Stitches: For finishing edges and stretch fabrics
  3. Decorative Stitches: For embellishment and creative projects
  4. Stretch Stitches: For knit fabrics and elastic materials
  5. Buttonhole Stitch: One-step automatic buttonhole
  6. Blind Hem Stitch: For invisible hemming

Tip: Refer to stitch guide on machine for recommended settings and applications.

Basic Sewing Operations

Step-by-step instructions for common sewing tasks.

  1. Straight Stitching: Select straight stitch, adjust length, guide fabric evenly.
  2. Zigzag Stitching: Select zigzag, adjust width and length for fabric type.
  3. Buttonhole Making: Position fabric, select buttonhole stitch, machine completes automatically.
  4. Reverse Stitching: Hold reverse button to reinforce seam beginnings and ends.
  5. Free Arm Sewing: Remove extension table for sleeves and cylindrical items.
  6. Changing Presser Feet: Lift lever, snap off old foot, snap on new foot.

WARNING! Never pull fabric while sewing. Let feed dogs move fabric automatically.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

  1. Daily: Remove lint from bobbin area and feed dogs
  2. Weekly: Oil machine according to lubrication points diagram
  3. Monthly: Clean race hook and check needle bar for wear
  4. As needed: Replace needle after 8-10 hours of sewing
  5. Storage: Cover machine when not in use to prevent dust accumulation

CAUTION! Unplug machine before cleaning or maintenance. Use only Singer recommended oils.

Accessories Included

AccessoryQuantityPurpose
All-Purpose Foot1General sewing
Zipper Foot1Installing zippers
Buttonhole Foot1Making buttonholes
Button Sewing Foot1Attaching buttons
Bobbins4Thread storage
Needles3Spare HAx1 needles
Seam Ripper1Removing stitches
Brush1Cleaning lint
Screwdriver1Needle plate removal

Regulatory Information

UL Listed: Complies with UL safety standards. FCC Part 15: Class B digital device; complies with interference limits. Copyright © 2025 Singer; trademarks of Singer Licensing B.V. For technical support, visit www.singer.com or contact 1-800-4-SINGER. Made for household use.

Troubleshooting

SymptomPossible CauseCorrective Action
Machine won't startPower connectionCheck power cord; ensure foot controller is plugged in; check power switch
Thread breakingTension/needle issuesRe-thread machine; check needle for damage; adjust tension
Uneven stitchesThreading/bobbinRe-thread upper and lower threads; check bobbin installation
Fabric not feedingFeed dogsClean feed dogs; check presser foot pressure; replace needle
Needle breaksWrong needle/bent needleReplace needle; ensure correct needle type for fabric; check needle installation
Bobbin thread bunchingBobbin threadingRe-wind bobbin; ensure bobbin inserted correctly; clean bobbin case

Service: 1-800-4-SINGER; www.singer.com for authorized service centers

Singer 4166 Sewing Machine Manual © - All Rights Reserved 2025