I just bought a Hoover Power Drive Concept Two Electronic vacuum from the thrift shop. It only needed two belts and seems powerful. But i don't understand what the small red button on the handle marked "Release Drive" means. Thanks for any insight! Anything else i need to know about this machine? Is it a good one? Are there high-performance bags available for it?

The belt may seem fine but could still be causing your problem. If it is over 6 months old replace the belt.

its the gear.and the belt has to be fitted on the gears properly.

I would not recommend a smaller belt. You will only wear the motor. This model series power nozzle needs to have a metal clip installed near the belt on the brush roller housing. I know that most of them left the factory without it. Remove the cover to see if one is ther. if not have your dealer send you a clip or a housing with one on it.

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

Your belt number will be listed on the data label with the model number. Check your local Hoover / Dirt devil dealer for the part.

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

the Savvy has had its problems with the switch in the handle it will need to be replaced. Don the Vacuum Doctor Alb,N.M.

Try calling Hoover directly toll free at
1-800-944-9200 M-F 8 AM - 7 PM EST.

You will need to get another belt, it's common that the people pulling the parts are so busy, that they sometimes mistakenly pull the wrong part, or the wrong part number was given, even a misprint in the manual. Needless to say, it seems that you don't have the correct belt. There is no adjustment for belt tension, so it has to be the  wrong belt.

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Generic problem for all Vacuums
Need to change a belt
Posted by gentilly on Jul 10, 2008
Need to change a belt on my Hoover Concept One Power drive

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. On the Hoover Concept One Power Drive Upright vacuum there are 2 belts, a drive belt and a power drive belt, always use the Hoover genuine belts and for the best cleaning always change you vacuum belts every 4 to 6 months for the best cleaning. !st, remove the bottom plate and cut off the old belts – then you need to lift up the one side of the brushroll that has the pulley side for the longer of the 2 belts and slide it on. Replace the brushroll, B4 you go to far remember which went on 1st, the power drive belt (smaller belt) or the brushroll belt, in either case hook the belt(s) onto the pulley 1st and then use a belt puller or a screwdriver with a hook or bend on the end and stretch the belt(s) onto the motor pulley and then track the belts in a straight line – do this on both belts. Once you have done this then replace the bottom plate. Check your owner’s manual in the trouble shooting guide to see if they also have suggestions or check with your local vacuum cleaner dealer in your area or contact the Hoover website or the Hoover factory cust serv phone # listed below. 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
Drive went out on my
Posted by buster_lls on Jul 09, 2008
Drive went out on my Hoover Steam Vac Shampooer and brushes won't turn plus there's a burning smell coming from it. Only used it 6 times - bought it in March - 2008.

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. It sounds to me like you have multiple problems with your power drive; a burning smell and the brushes don’t turn, and the dop is on March, 2008 – the Hoover Steam Vac Shampooer has a one year factory warranty and it could be a broken part for the brushes won’t turn or a belt would cause the burning smell. If it is not the belt or broken part it probably is the motor of which you should take it to a authorized Hoover vacuum cleaner dealer in your area or to contact the Hoover factory cust serv listed below or the Hoover website for information. If it is the motor the factory authorized dealer will replace the part for the motor and the broken part for the brushes, if it is the belt that would be an out of pocket expense. 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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Brush won't turn and self propel doesn't work (by 2 users)
Posted by brucelk on May 24, 2008
I have replaced both the v-belt and the larger belt with Hoover brand belts and the brushes still don't turn properly and the self-propel function doesn't work. It seems that when I lower the handle all the way down toward the floor it works fine, but no one can vacuum this way. Is there an adjustment to belts to tighten them up? Otherwise I have to get it in to the only repair shop in town which is an hour's drive.X
This Problem has been added to the Share Your Expertise Page under "My Work Queue".
OK
1 Other User Has the Same Problem Comment by chartsell, posted on May 29, 2008 I have replaced both the belts as well. I have tightened the screws as someone else as suggested. The brush still will not turn unless you lower the handle almost to the ground. Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. Hoover U6437-900 / U6439-900 Windtunnel Vacuum. It is not so much the belts, the 2 belts are only part of the solution. The average belt change is every 4 to 6 months as a rule and to change them @ the same time. 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.