Instruction Manual for Sears Kenmore Sewing Machine Model 158

The Sears Kenmore Sewing Machine Model 158 is a versatile household sewing machine featuring multiple stitch patterns, adjustable stitch length and width, built-in buttonholer, free arm capability, automatic needle threader, drop-in bobbin system, and variable speed control. This manual covers safety instructions, machine features, setup, operation, maintenance, and troubleshooting for optimal performance.

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

Features at a Glance

Key components: Sewing head with free arm, built-in stitch patterns, automatic needle threader, drop-in bobbin system, foot pedal control, and accessory storage.

FeatureDescription
Stitch PatternsMultiple built-in stitches including straight, zigzag, decorative
Stitch Length ControlAdjustable from 0-4mm
Stitch Width ControlAdjustable from 0-5mm
Automatic ButtonholerOne-step buttonhole function
Free ArmRemovable extension table for cylindrical sewing
Automatic Needle ThreaderEasy needle threading mechanism
Drop-in BobbinTop-loading bobbin system with clear cover
Variable Speed ControlFoot pedal with speed adjustment
Reverse StitchBuilt-in reverse stitching function
Thread Tension ControlAdjustable upper thread tension

Installation and Setup

Unpack and inspect all components. Place on stable, level surface.

  1. Remove machine from packaging: Lift carefully from carrying case.
  2. Attach power cord: Plug into machine and wall outlet (120V AC).
  3. Install foot pedal: Connect to machine port and place on floor.
  4. Attach extension table: Snap into position for flat sewing surface.
  5. Install needle: Loosen needle clamp screw, insert needle flat side back.

WARNING! Keep fingers away from needle area during operation. Unplug when not in use.

First-Time Operation

Prepare machine for initial use with proper threading and bobbin winding.

  1. Wind bobbin: Place thread on spool pin, guide through tension disc, wind bobbin.
  2. Insert bobbin: Drop bobbin into case with thread pulling counterclockwise.
  3. Thread upper thread: Follow numbered guides from spool to needle.
  4. Use needle threader: Lower lever to automatically thread needle.
  5. Test stitches: Use scrap fabric to test stitch quality and tension.

CAUTION! Always raise presser foot when threading. Lower before sewing.

Specifications

Controls and Settings

Main controls located on front and side of machine. Stitch selection dial, stitch length and width controls, reverse button, tension dial.

Stitch Selection: Turn dial to select desired stitch pattern. Stitch Length: Adjust for shorter or longer stitches. Stitch Width: Control zigzag and decorative stitch width. Reverse: Hold button for reinforcement stitching. Tension: Adjust for different fabric types (4-5 for medium weight fabrics).

Stitch Selection and Patterns

Available stitches include straight stitch, zigzag, stretch stitches, blind hem, and decorative patterns.

  1. Straight Stitch: For basic sewing and seams (position 1)
  2. Zigzag Stitch: For finishing edges and stretch fabrics
  3. Blind Hem: Nearly invisible hemming
  4. Decorative Stitches: Multiple pattern options
  5. Buttonhole: Automatic one-step buttonhole
  6. Stretch Stitches: For knit fabrics

Tip: Always test stitch on scrap fabric before sewing project.

Threading and Bobbin

Proper threading is essential for quality stitches and preventing jams.

  1. Upper Threading: Follow numbered guides from spool pin to needle.
  2. Needle Threader: Lower lever, hook thread, raise lever to thread needle.
  3. Bobbin Winding: Place thread on spool pin, guide through tension, wind bobbin.
  4. Bobbin Insertion: Drop into case with thread pulling counterclockwise.
  5. Bring Up Bobbin Thread: Hold upper thread, turn handwheel toward you.

WARNING! Ensure presser foot is raised during threading process.

Maintenance and Cleaning

Regular maintenance ensures optimal performance and longevity.

  1. Daily: Brush out lint from bobbin area and feed dogs.
  2. Weekly: Oil moving parts with sewing machine oil.
  3. Monthly: Clean race hook and surrounding mechanism.
  4. As Needed: Replace needle after 8-10 hours of sewing.

CAUTION! Unplug machine before cleaning or maintenance.

Accessories

Standard accessories included with machine.

AccessoryUse
Zigzag FootGeneral purpose sewing
Buttonhole FootAutomatic buttonholes
Zipper FootInstalling zippers
Button Sewing FootSewing on buttons
Spool PinsHold thread spools
Bobbins (4)Extra bobbins for different threads
Needles (3)Replacement needles
Seam RipperRemove stitches
BrushClean lint and debris

Regulatory Information

UL Listed: Complies with safety standards for household sewing machines. Copyright © Sears Brands, LLC. Manufactured to meet industry standards for performance and safety. For technical support or service, contact Sears Customer Service at 1-800-469-4663 or visit www.sears.com.

Troubleshooting

SymptomPossible CauseCorrective Action
Thread breakingIncorrect threading/tensionRe-thread machine; adjust tension; check for burrs on needle.
Skip stitchesWrong needle/damaged needleReplace needle; ensure correct needle type for fabric.
Bobbin thread bunchingIncorrect bobbin threadingRemove and reinsert bobbin; ensure thread unwinds correctly.
Machine jamsLint buildup/thread tangleClean bobbin area; remove tangled threads; re-thread.
Uneven stitchesTension issuesAdjust upper and bobbin tension; check threading.
Needle breaksWrong needle/bent needleReplace needle; ensure proper insertion; don't pull fabric.

Service: 1-800-469-4663; www.sears.com

Instruction Manual for Sears Kenmore Sewing Machine Model 158 © - All Rights Reserved 2025