20 Most Recent Hoover U6434-900 Bagged Upright Vacuum Questions & Answers

Searching for parts on eBay is HELPFUL...
(if only to get an idea... what the whole part looks like)...

Here I did a NETWORK SEARCH...

(very high 5-Star)
PartsWarehouse com

Call them and ask if mere mortals can insert the new part.

Searspartsdirect... (Improving service (needed to)):
Water Filters Lawn Garden Appliance Parts

Hope this helps

Carnac the Magnificent

Hoover U6434-900... | Answered on Jan 23, 2019

Hi! We had Ian from our customer care team put together this quick video: http://youtu.be/cD_Mk_hHXNY with some tips on how to change your belts. Hope this helps!

Hoover U6434-900... | Answered on Jan 20, 2015

Hello! The vacuum has a thermal protector sensor that will automatically shut off the vacuum when it is overheated. The vacuum should turn back on once it has cooled down. This can take up to an hour. Overheating is usually caused by a clog or a filter that needs to be cleaned or replaced. Below are steps you may follow to check your vacuum for blockages.

1. Locate the primary filter behind the side grille. Wash the filter, squeeze it out and allow 24 hours to air dry outside of the vacuum. It should be washed about every other month.

2. Locate the secondary filter located in the vacuum base under the paper bag. The secondary filter can be washed in the same manner as the primary filter.

3. Replace the bag if it is full.
4. Remove the hose from both ends. Use a broom stick to gently loosen and clear any clogs from hose.
5. Remove the bottom plate and brush-roll. Use a wooden spoon or something similar to loosen and remove any clogs from the lower hose.

Hope this helps!

Hoover U6434-900... | Answered on Nov 12, 2014

Check this out

Hoover U6434-900... | Answered on Aug 29, 2014

I have the same problem and just found this website that appears to have the same switch.


Hoover U6434-900... | Answered on Dec 07, 2011


How To Replace the On / Off Switch on Hoover Windtunnel Self-Propelled Uprights

What you'll need to do this repair:
- Phillips head screwdriver
- Needle Nose Pliers
- Hoover Windtunnel Switch For All Upright Models

Step 1. Turn the vacuum cleaner around so that the back is facing you. Remove the two screws at the top of the vacuum that are holding the handle on the machine. Please see the picture below of the two highlighted screws that need to be removed;

Step 2. After these two screws have been removed, simply slide the handle backwards, and remove it completely from the vacuum and set it aside. You now can see the on/off switch, but you can't easily change it from here, you'll need to complete several other steps before you can remove the switch. Here's what the vacuum should look like after removing the handle:

Step 3. After removing the handle from the vacuum, turn the machine around so the front of it is facing you. Open the vacuum bag door and set the door aside. Also remove any attachments that are on-board in the tool storage bin, this model has a hand-held turbo brush stored here. After removing both of these parts, you'll need to unscrew 3 screws that holds the tool caddy onto the vacuum cleaner. I have circled the area where these 3 screws are located:

Step 4. After removing these three screws, pull the tool caddy off of the vacuum by pulling straight forward by using the tool caddy lid. You'll now have access to both the front and the back sides of the switch. Use your needle nose pliers to remove the two wires that are attached to the switch. Be careful when pulling these wires off because if you pull too hard, then it will break the switch terminal off inside of the wire. Most models have the wire that has a plastic covering over the end of it on the top, and the metal terminal is connected on the bottom. The two lead wires that need to be removed are highlighted:


Step 5. After the wires have been removed from the switch, turn the vacuum back around so that the back of the machine is facing you. Simply use your flat head screwdriver to pry the switch off. You may push on the back side of the switch where the wires connect to it in order to give a space so that you can get a screw driver behind it. Here's how it should look:

Step 6. Once the old switch has been removed, simply push the new switch into the open hole. Important: Make sure that the Off setting of the switch is at the bottom, and the part of the switch that says on is on the top, otherwise the switch will be reversed. Re-attach the wires to the switch, with the wire that has the plastic covering on top, and the metal wire terminal on the bottom. The only tricky part of reassembling is when you put the handle assembly back on the vacuum. As you can see, there is a metal cable below the switch. This metal cable controls the self-propelled mechanism. If you look at the handle assembly, you'll see where the self propelled cable sits inside. The easiest way to line these up is to pull the cable up to the top, and then line up the rod inside of the handle that the cable goes in, and slide the handle back on the vacuum.

I hope this was helpful.

Chris J.

on Apr 10, 2010 | Hoover U6434-900 Bagged Upright...


We have recorded a ver convenient video on how to replace the belts on your Hoover Windtunnel Self-Propelled Upright Vacuum Cleaner. We also explain how to do regular maintenance on the roller brush to prolong the life of these belts. It's best to replace both the thin belt, and the fat belt, Parts 38528034 and 38528035 at the same time.

Here's our video repair;

I hope that this helped you. If this helped, please be sure to rate the repair as helpful by clicking on the Thumbs Up Icon in the repair.

Thank you very much,

Chris Jones

Hoover U6434-900... | Answered on Mar 22, 2010

I took the top of the vacuum apart and found the cable that drives the wheels was broken. I am going to order a new cable.

Hoover U6434-900... | Answered on Feb 15, 2010

Your model requires (2) different belts. Here is a link to the belts you need and to the manual:

U6434-900 Brush Roll Belt

U6434-900 Self-Propel Belt

U6434-900 Manual

Hoover U6434-900... | Answered on Nov 25, 2009

Check the belt, if it's a belt driven brush roller. If not, check the bearings of the roller. You may need to replace the brush roller. Take it to a local shop and have it looked at.

Hoover U6434-900... | Answered on Jul 29, 2009

handle is suppose to be a little loose. s.p. function not working, try changing the flat belt p# 38528035 or pk # 40201170 (2)

Hoover U6434-900... | Answered on Jul 20, 2009

If this is a new belt that keeps coming off, then if not catching something in the roller like a scatter rug, etc then the belt isn't tracking true. The pulley may have come loose for one thing, something has to be off to have the belt come off. Does it come off almost right away, or after some uasge?

Hoover U6434-900... | Answered on Apr 10, 2009

all i no is on the bottom of unit there is 2 smaller wheels that control the height adj. see if that the prob.

Hoover U6434-900... | Answered on Mar 02, 2008

Nothing is free

Hoover Vacuums | Answered on Apr 17, 2019

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