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Speed Queen
Washer

Model # SWTZ20LN Official Speed Queen commercial washer

Here are the diagrams and repair parts for Official Speed Queen SWTZ20LN commercial washer, as well as links to manuals and error code tables, if available.

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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 274 parts  |
Screw 503688
#6

Security kit diagram

Screw

Part #503688

Replaced by #WP3390631

?
Manufacturer substitution
This part replaces 503688. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.39
| 
19% OFF Phone Price : $5.39
In Stock
Washer Drain Pump 201566P
#17

Motor assy diagram

Washer drain pump

Part #201566P

$57.42
In Stock
Washer Drive Motor 38034P
#3

Motor assy diagram

Washer drive motor

Part #38034P

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

Washer Agitator Screw And O-ring 39432
#12

Agitator assy diagram

Washer agitator screw and o-ring

Part #39432

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

Pullet 38225P
#15

Motor assy diagram

Pullet

Part #38225P

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

Washer Drive Block 39508P
#11

Agitator assy diagram

Washer drive block

Part #39508P

$50.82
In Stock
Washer Start Capacitor 37377
#26

Motor assy diagram

Washer start capacitor

Part #37377

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

Screw 35369
Screw

Part #35369

This item is not returnable
$4.91
In Stock
Washer 37772
#28

Motor assy diagram

Washer

Part #37772

This item is not returnable
$2.16
In Stock
Hose Clamp 36801
#14

Valve assy diagram

Hose clamp

Part #36801

This item is not returnable
$5.89
In Stock

Most common symptoms to help you fix your washers

Choose a symptom to see related washer repairs.

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Why is my washing machine noisy or shaking?

Main causes: unbalanced load, loose spanner nut, worn drive block, broken shock absorber or suspension spring, debris in...

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Why won't my washing machine start?

Main causes: bad lid switch or door lock, bad timer or electronic control board, wiring failure, bad water inlet valve a...

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Why won't my washing machine drain?

Main causes: clogged drain hose, house drain clogged, bad drain pump, water-level pressure switch failure, bad control b...

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Why does my washing machine overfill?

Main causes: leaky water inlet valve, faulty water-level pressure switch, bad electronic control board...

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Why is the water in my washing machine the wrong temperature?

Main causes: water heater failure, bad water temperature switch, faulty control board, bad water valve, faulty water tem...

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Why doesn't my washing machine work at all?

Main causes: lack of electrical power, wiring failure, bad power cord, electronic control board failure, bad user interf...

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Why won't my washing machine fill?

Main causes: no water supply, bad water valves, water-level pressure switch failure, control system failure, bad door lo...

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Why won't my washing machine agitate or spin?

Main causes: worn agitator dogs, bad clutch, broken motor coupler, shifter assembly failure, broken door lock, suspensio...

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Why your washing machine won't finish its cycle

Main causes: broken lid switch or lid lock, bad pressure switch, broken shifter assembly, faulty control system...

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Repair guides for top-mount refrigerators

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How to replace a door gasket in a top-freezer refrigerator

How to replace a door gasket in a top-freezer refrigerator

The door gasket seals the gap around the door to keep the cold air in and the warm air out. It’s easy to replace a worn ...

Read more
Repair difficulty
Time required
15 minutes or less
How to replace the electronic control board inside a top-freezer refrigerator

How to replace the electronic control board inside a top-freezer refrigerator

The electronic control board is the "brains" of the refrigerator. Replace the electronic control board if it fails....

Read more
Repair difficulty
Time required
15 minutes or less
How to install an ice maker kit in a top-freezer refrigerator

How to install an ice maker kit in a top-freezer refrigerator

The ice maker kit is an optional accessory for refrigerators. Install the ice maker kit in a refrigerator that doesn't h...

Read more
Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your washers

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

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How to use your washing machine efficiently

How to use your washing machine efficiently

Find tips for using your washing machine efficiently to save energy and help reduce utility bills....

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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 repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances....

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