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Kenmore
Mechanical Sewing Machine

Model # 158140 Official Kenmore sewing machine

Here are the diagrams and repair parts for Official Kenmore 158140 sewing machine, as well as links to manuals and error code tables, if available.

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Owner’s manual
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 305 parts  |
Guard Cord 2995
#46

Base assembly diagram

Guard cord

Part #2995

The manufacturer no longer makes this part, and there's no substitute part

Rocker Shaft 4071
#42

Unit parts diagram

Rocker shaft

Part #4071

The manufacturer no longer makes this part, and there's no substitute part

Feed Cam 4820
#33

Unit parts diagram

Feed cam

Part #4820

The manufacturer no longer makes this part, and there's no substitute part

Washer 4843
#31

Unit parts diagram

Washer

Part #4843

The manufacturer no longer makes this part, and there's no substitute part

Guard Cord 2537
#13

Geared cam assembly diagram

Guard cord

Part #2537

The manufacturer no longer makes this part, and there's no substitute part

Rod 2938
#48

Shuttle assembly diagram

Rod

Part #2938

The manufacturer no longer makes this part, and there's no substitute part

Lamp Plate 2987
#40

Base assembly diagram

Lamp plate

Part #2987

The manufacturer no longer makes this part, and there's no substitute part

Spring 110
#50

Unit parts diagram

Spring

Part #110

The manufacturer no longer makes this part, and there's no substitute part

Shift Rod 125
#59

Shuttle assembly diagram

Shift rod

Part #125

The manufacturer no longer makes this part, and there's no substitute part

Block Stud 302
#26A

Unit parts diagram

Block stud

Part #302

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your sewing machines

Choose a symptom to see related sewing machine repairs.

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Why does the bobbin thread break in my sewing machine?

Main causes: dirty shuttle race, improper thread routing, incorrect thread tension…

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Why is my sewing machine skipping stitches?

Main causes: dirty shuttle race, wrong thread tension, bad needle timing, damaged needle, using the wrong type of needle…

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Why does my sewing machine lock up?

Main causes: thread bunched up in the shuttle race, bad needle timing, internal drive gear failures…

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Why does my sewing machine make a knocking sound?

Main causes: machine needs lubrication, internal gear failure…

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Why won't fabric move through my sewing machine?

Main causes: problems with the feed dogs, setting stitch length to 0…

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Why is my sewing machine running sluggishly?

Main causes: lack of lubrication, lint buildup, worn drive belt, faulty drive motor…

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Why won't my sewing machine needle move?

Main causes: disengaged clutch, broken drive belt, internal drive gear failure…

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Why doesn't my sewing machine motor run?

Main causes: faulty foot pedal, locked drive gears, wiring failure, bad drive motor…

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Why won't my sewing machine turn on?

Main causes: power supply failure, bad power cord, faulty On/Off switch…

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Most common repair guides to help fix your sewing machines

These step-by-step repair guides will help you safely fix what’s broken on your sewing machine.

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How to replace a sewing machine on/off switch

How to replace a sewing machine on/off switch

If the sewing machine is completely dead, replace the On/Off switch using these 6 steps.…

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Repair difficulty
Time required
 30 minutes or less
How to replace a sewing machine drive belt

How to replace a sewing machine drive belt

You can replace a broken sewing machine drive belt in about 15 minutes. …

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Repair difficulty
Time required
 15 minutes or less
How to replace a sewing machine drive motor

How to replace a sewing machine drive motor

If the drive motor on your sewing machine runs roughly or doesn't run at all, you can replace it in about 30 minutes usi…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your sewing machines

Use the advice and tips in these articles and videos to get the most out of your sewing machine.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

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