Hoover
Tools & Attachment

Model # U3903-070 Official Hoover concept cleaning tools

Here are the diagrams and repair parts for Official Hoover U3903-070 concept cleaning tools, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 42 parts  |

Hose Asy Cpl 43434209
#23A

Cleaning tools - concept diagram

Hose asy cpl

Part #43434209

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

Wheel 32761008
#8

Cleaning tools - concept diagram

Wheel

Part #32761008

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

Connection Hose 32288003
#17A

Cleaning tools - concept diagram

Connection hose

Part #32288003

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

Roller Shaft 21155119
#9

Cleaning tools - concept diagram

Roller shaft

Part #21155119

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

Hose 38671001
#1B

Cleaning tools - concept diagram

Hose

Part #38671001

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

Washer 31142012
#11

Cleaning tools - concept diagram

Washer

Part #31142012

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

Kenmore Sleeve Hose 32156010
#16

Cleaning tools - concept diagram

Kenmore sleeve hose

Part #32156010

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

Connect Hose 32288007
#17

Cleaning tools - concept diagram

Connect hose

Part #32288007

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

Crevice Tool 38617023
#21A

Cleaning tools - concept diagram

Crevice tool

Part #38617023

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

Extension Tube Assembly 13144
#3

Cleaning tools - concept diagram

Extension tube assembly

Part #13144

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
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 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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

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Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…