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Hoover
Upright Vacuum

Model # U3721910 Official Hoover vacuum

Here are the diagrams and repair parts for Official Hoover U3721910 vacuum, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 186 parts  |
Speed Nut 21362006
#30

Agitator housing diagram

Speed nut

Part #21362006

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

Housing Cover 37951006
#19

Power max diagram

Housing cover

Part #37951006

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

Nut 160079AW
#6

Power max diagram

Nut

Part #160079AW

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

Canister Vacuum Screw 21447014
#20

Agitator housing diagram

Canister vacuum screw

Part #21447014

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

Nut 33426001
#16

Motor diagram

Nut

Part #33426001

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

Thread Guard 41435018
#10

Agitator diagram

Thread guard

Part #41435018

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

Vacuum Switch 28179021
#9

Handle diagram

Vacuum switch

Part #28179021

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

Motor Housing 42193004
#7

Motor diagram

Motor housing

Part #42193004

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

Lifter-lh 38562010
#53

Agitator housing diagram

Lifter-lh

Part #38562010

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.

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Why does my vacuum cleaner shut off suddenly?

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

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Why doesn't my vacuum cleaner have good suction?

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

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Why doesn't my vacuum cleaner's brush roll spin?

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

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Why won't my vacuum cleaner turn on?

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

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

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