Hoover
Upright Vacuum

Model # U4521 Official Hoover upright vacuum cleaner

Here are the diagrams and repair parts for Official Hoover U4521 upright vacuum cleaner, 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

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 120 parts  |

Self Stick Support Pad 34111001
#83

Main assembly diagram

Self stick support pad

Part #34111001

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

Field Bolt 45118
#11

Motor diagram

Field bolt

Part #45118

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

Vacuum Screw 21465314
#15

Main assembly diagram

Vacuum screw

Part #21465314

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

Indicator Guide Spring 35276006
Indicator guide spring

Part #35276006

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

Washer 12 Pk 21312772
#54

Main assembly diagram

Washer 12 pk

Part #21312772

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

Handle Bolt 21631302
#32

Main assembly diagram

Handle bolt

Part #21631302

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

Handle Receptacle 46326110
#26

Main assembly diagram

Handle receptacle

Part #46326110

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

Retaining Flange 35434040
#88

Main assembly diagram

Retaining flange

Part #35434040

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

Main Body 42242245
#76

Main assembly diagram

Main body

Part #42242245

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

Vacuum Conical Washer 21347003
#3

Agitator diagram

Vacuum conical washer

Part #21347003

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

Most common symptoms to help you fix your vacuum cleaners

Choose a symptom to see related vacuum cleaner repairs.

Main causes: damaged vacuum hose, clogged motor air filter, bad suction motor…

Main causes: weak suction motor, vacuum bag is full, clog in suction air path, dirty exhaust filter, leaky vacuum hose…

Main causes: broken drive belt, damaged brush roll, tripped brush roll motor overload, bad brush roll motor, wiring fail…

Main causes: lack of power, bad power cord, drive motor failure, wiring failure…

Effective articles & videos to help repair your vacuum cleaners

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

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…

10 must-have tools for appliance repair

10 must-have tools for appliance repair

Come see which tools made our top 10 must-haves for DIY appliance repair.…

Vacuum common questions

Vacuum common questions

Find the answers to frequently asked questions about vacuum cleaners.…