Model # 4273 Official Montgomery Ward humidifier

Here are the diagrams and repair parts for Official Montgomery Ward 4273 humidifier, 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 34 parts |

#19

Humidifier diagram

Humidifier pad

Part #1041

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

#12

Humidifier diagram

Speed switch

Part #5560100

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

#21

Humidifier diagram

Filler hose

Part #5060130

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

#20

Humidifier diagram

Cabinet

Part #3487001LBR

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

#17

Humidifier diagram

Two-speed lead

Part #5561000

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

#24

Humidifier diagram

Air filter

Part #1051

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

Humidifier diagram

Control panel decal

Part #5863310

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

#29

Humidifier diagram

Washer motor

Part #5460750

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

#16

Humidifier diagram

Straight lead

Part #5560940

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

#32

Humidifier diagram

End cover

Part #3481001DBR

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

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

View all

Why won't my pressure washer mix in the detergent?

Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai...

Why is smoke coming from the pressure washer's exhaust?

Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee...

Why won't the pressure washer starter rope retract?

Main causes: broken recoil spring, damaged recoil starter...

Why does my pressure washer's engine lose power?

Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve...

Why is the spray from my pressure washer weak?

Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu...

Why doesn't my pressure washer recoil starter work?

Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston...

Why does my pressure washer spray too hard?

Main causes: faulty unloader valve, bad pressure regulator...

Why won't my pressure washer engine start?

Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re...

Why does water spray out of my pressure washer's pressure relief valve?

Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba...

Repair guides for gas pressure washers

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

View all

How to install a pressure washer check valve kit

Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valv...

Repair difficulty

Time required

120 minutes or less

How to install a pressure washer O-ring kit

O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps t...

Repair difficulty

Time required

45 minutes or less

How to install a pressure washer chemical injection kit

The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace t...

Repair difficulty

Time required

15 minutes or less

Articles and videos for gas pressure washers

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

View all

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

Model # 4273 Official Montgomery Ward humidifier

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for gas pressure washers

Why won't my pressure washer mix in the detergent?

Why is smoke coming from the pressure washer's exhaust?

Why won't the pressure washer starter rope retract?

Why does my pressure washer's engine lose power?

Why is the spray from my pressure washer weak?

Why doesn't my pressure washer recoil starter work?

Why does my pressure washer spray too hard?

Why won't my pressure washer engine start?

Why does water spray out of my pressure washer's pressure relief valve?

Repair guides for gas pressure washers

How to install a pressure washer check valve kit

How to install a pressure washer O-ring kit

How to install a pressure washer chemical injection kit

Articles and videos for gas pressure washers

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

Choosing the correct spray tip for a pressure washer

Solving pressure washer problems

Parts & More

Stay Connected

Quick links

Let us help you

More resources