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Electronic Sewing Machine

Model # 9940 Official Singer sewing machine

Here are the diagrams and repair parts for Official Singer 9940 sewing machine, as well as links to manuals and error code tables, if available.

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Browse Parts for9940 Sewing Machines

  • Singer Feed Foot HP31099-3
    #18

    Accessory set diagram

    Singer feed foot

    Part #HP31099-3

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

  • Presser Foot HP30217-2
    #16

    Accessory set diagram

    Presser foot

    Part #HP30217-2

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

  • Singer Accessory Set HP33081
    #0

    Accessory set diagram

    Singer accessory set

    Part #HP33081

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

  • Tension Ay HP32820
    #0

    Motor/belt tension diagram

    Tension ay

    Part #HP32820

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

  • Terminal Box HP33083
    #9A

    Base/head/face plate diagram

    Terminal box

    Part #HP33083

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

  • Foot Button HP32948
    #7

    Accessory set diagram

    Foot button

    Part #HP32948

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

  • Shank HP32968
    #55

    Needle bar guide/z link bracket diagram

    Shank

    Part #HP32968

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

  • Motor Assembly HP32919
    #1

    Motor/belt tension diagram

    Motor assembly

    Part #HP32919

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

  • Sewing Machine Foot Control HP31098-2
    #29

    Accessory set diagram

    Sewing machine foot control

    Part #HP31098-2

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

  • Pin-jack HP31800
    #18A

    Front enclosure/front panel diagram

    Pin-jack

    Part #HP31800

    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.

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

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

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

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

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

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

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

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

Main causes: machine needs lubrication, internal gear failure…

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.

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…

Repair difficulty
Time required
 15 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. …

Repair difficulty
Time required
 15 minutes or less
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.…

Repair difficulty
Time required
 30 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.

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.…

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.…

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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