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Singer
Mechanical Sewing Machine

Model # 724 APOLLO HOOK Official Singer apollo hook sewing machine

Here are the diagrams and repair parts for Official Singer 724-APOLLO-HOOK apollo hook sewing machine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 590 parts  |
Stud 511057
#36

Alpha feed diagram

Stud

Part #511057

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

Spring 163637
#50

Covers diagram

Spring

Part #163637

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

Ret Plt Pnl 381903
#7

Hook area diagram

Ret plt pnl

Part #381903

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

Slide Spring 172957
#27

Hook area diagram

Slide spring

Part #172957

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

Spool Pin 172908
#37

Covers diagram

Spool pin

Part #172908

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

Sewing Machine Bobbin 172336
Sewing machine bobbin

Part #172336

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

Tension Dial 174400-656
#75

Covers diagram

Tension dial

Part #174400-656

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

Bed Cushion 174124
#9

Covers diagram

Bed cushion

Part #174124

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

Sewing Machine Thumb Screw 354135-452
#51

Arm shaft and head end diagram

Sewing machine thumb screw

Part #354135-452

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

Hem Guide 171110

#NI

All parts diagram

Hem guide

Part #171110

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 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 does my sewing machine make a knocking sound?

Main causes: machine needs lubrication, internal gear failure...

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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 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 won't my sewing machine needle move?

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

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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 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 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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