No problem could you advise models that are self propeld

Check the ducting that leads from the pick-up brush to the container. Fluff and larger bits are inclined to get jammed in elbows and bends in the pipes.

unfasten the handle from the back then slide it back towards your self then the switch is there

the best way to install it is to put it on the motor shaft first and then to start putting it on the large pulley at the top and roll it on these belts can be hard to put on.

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_b96ba3f038cf317c

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Generic problem for all Vacuums
I own a self-propelled Hoover
Posted by gohornsgo on July 17, 2008
I own a self-propelled Hoover Wind Tunnel vacuum cleaner (Model U6425-920). I do now have an owner's manual and was wondering how to clean the HEPA filter on this model (*this model uses a vacuum cleaner bag also).
Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. The best way to clean the HEPA filter is to take it outside and use a blower over the trash can and blow off the dust and dirt, or use things like an old paint brush and brush it off, or you can vacuum it off with another canister vacuum or shop vac if you have an extra one. For the best filtration is to replace it, there fore the air flow will catch most of the dust and dirt and then you would have to watch how fast it gets dirty and then do the maintenance.
So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
http://www.hoover.com Telephone
Contact our Customer Service Department at 1.330.499.9499
Monday through Friday
8 a.m. - 7 p.m. EST
Thanks, Don the Vac Man
Go Ahead. Use Us.

http://geeksquad.fixya.com/ThreadView.aspx?prdid=40485&thid=661987 How do you replace the forward / reverse cable?
Posted by HANDYBILL on Jun 10, 2008
I don't know how the end fits back on the replacement cable.


Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. Hoover U6437-900 / U6439-900 Windtunnel Vacuum. There is a hook on the bottom of the vacuum and @ the top by the handle as well. You may what to get a schematic or owner’s manual to see how they hook up because of the newer and different Model #’s for Hoover. The Hoover Self-Propelled works on when the handle is lower to a comfortable position then the self-propelled drive may just need and adjustment. There is a self-propelled rod that controls the self-propelled feature and it either needs adjustment or replacement or the part that hold it may be broken but either one can be fixed. So feel free to contact your local vacuum cleaner dealer with questions. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
http://www.hoover.com Telephone
Contact our Customer Service Department at 1.330.499.9499
Monday through Friday
8 a.m. - 7 p.m. EST
Thanks, Don the Vac Man
Go Ahead. Use Us.

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Generic problem for all Vacuums
Install self propelled belt
Posted by wmtp on Jun 04, 2008
Install self propelled belt

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. Usually the self propelled vacuum have 2 belts and you should replace them both 2 the same time 1st the self propelled belt and then the brushroll belt. Normally you would hook the belt on the pulley side of the brushroll or self propelled unit and then stretch the belt onto the motor pulley side of the motor using a belt puller or a screwdriver with a bend on the end for pulling and or stretching either belt onto the motor pulley. If you have a problem please feel free to contact your local vacuum cleaner dealer.
So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
Thanks, Don the Vac Man
Go Ahead. Use Us.

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Generic problem for all Vacuums
I have a Hoover self
Posted by thjunk2007 on May 29, 2008
I have a Hoover self propelled Windtunnel vacuum( Model U6425-920) that stops in the middle of cleaning. I have changed the flat belt and I'm still experiencing the problem. I usually have to wait an hour or so b/4 it would work again. Any advice?

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. It is possible that you my have a heat sensor, but as far as what you described you need to change both belts, the brushroll belt and the power drive belt as well and @ the same time. The average belt change is every 4 to 6 months on the vacuum. Does it stop completely or is it just the belt problem. Or #2 is the vacuum giving off a burning smell other than the belts and if it does it could be the motor. Other wise , please call the factory or a local Hoover warranty station in your area. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
http://www.hoover.com Telephone
Contact our Customer Service Department at 1.330.499.9499
Monday through Friday
8 a.m. - 7 p.m. EST
Thanks, Don the Vac Man
Go Ahead. Use Us.

Generic problem for all Vacuums
How to change the belt
How to change the belt on a Hoover High Performance upright vacuum cleaner

I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Most of the Hoover upright vacuums service from the bottom and to start remove the bottom plate, that should expose the belt – if this is the case, some Hoover’s might be self propelled, if not the self-propelled vacs have 2 belts and the non self propelled models have one belt – so remove the belt(s) and then lift up on the brushroll and slide the belt onto the belt pulley then take a screwdriver tool with a hook on the end and stretch the belt onto the motor shaft – once this has been done the track the belt(s) and it should straighten out and run straight, re-install the bottom plate, plug in and test. If you cannot get @ the belt from the bottom the look for 2 or 3 screws – remove the screws and the top cover will lift off and then follow the procedure mentioned above… Questions? Please feel free to contact your local vacuum dealer in your area or in the yellow pages or contact the Hoover factory for more details.
http://www.hoover.com Telephone
Contact our Customer Service Department at 1.330.499.9499
Monday through Friday
8 a.m. - 7 p.m. EST

· Sometimes grabs the carpet for no reason.
· Comes back too fast when I push it back.

I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Self-Propelled WindTunnel by Hoover U6445906 Without knowing the brand name or model number you may have the height adjustment to low and the vacuum will say “bite down” on the carpet of which will make the belt burn and might leave marks on the carpet – and if you have a self-propelled vacuum it does come back fast if you because you have a transmission just like a car and you have to control the speed of the vacuum or because it may have a weak belt the vacuum will pull back easier – I really would like to know the brand name and model number so that I could accurately give a better answer . Recommended belt change for flat belt(s) are 4 to 6 months for better cleaning and one a year for a geared belt – both can stretch and lose their cleaning function

Hoover U6437-900 U6439-900 Upright
LOOSE BELT. THE BELT IS STILL LOOSE EVEN AFTER REPLACING

I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
The reason it seems like the belt is too big is probable correct, you may have the wrong size belt for your vacuum, use genuine belts – your particular model is a self propelled model and takes two (2) belts and they should stretch on very tightly and snug and it is smart to use the genuine belt package for the model that you have and we Recommended the belt change for flat belt(s) are 4 to 6 months for better cleaning
They should be tight on the belt pulleys in order to do the best cleaning – use genuine belts
http://www.hoover.com
Telephone
Contact our Customer Service Department at 1.330.499.9499
Monday through Friday
8 a.m. - 7 p.m. EST