For U5491900 and UH50000
IMPORTANT 1: If the self-propel balks, replace the belts and set adjustment for taller pile carpeting. Instructions say you can use low setting for all carpet heights.
Per my experience, that may not always be true.
IMPORTANT 2: When the vacuum needs to be carried, use the molded
plastic grip on the Back of the unit. Lifting by the handle potentially stretches
the cable used to turn on/off self propel and can throw it out of adjustment
or even damage it. That is a commonly needed repair for Wind Tunnels.
UH50000 was purchased 11/14/2010 and it performed wonderfully ... until recently.
The self propel was balky. I replaced the belts, noting both the drive and brush roll belts taken off were a bit stretched.
No joy. Plus, I smelled the dreaded Hot Rubber smell!
Took apart and reassembled several times. Finally, adjusted carpet height and achieved joy! But, whenever the brush roll was turning, there was a rattle.
Again, took apart, examined, and reassembled several time.
Decided that probably something internal is broken so I looked for
models on sale that use the same bags and hopefully the same belts.
Found the U5491900 on sale on Hoover.com and ordered one.
Next day. AGAIN took apart the UH50000 (getting efficient at this!)
and reassembled. SHOCK and AWE - It works perfectly with NO rattle!
No theories on this because it IS a simple process.
NOTE: While the vacuum is used lightly, it has the original brush roll
showing practically NO wear after 5 years.
The title I used includes "with one possible shortcoming".
I say that because on the UH50000, the carpet height adjustment
"wants" to be in the low setting - and usually moves there on its own.
Most of the time, there is no problem. But that also means if the self propel
balks, it's easy to forget that adjustment exists.
Since I just received the UH5491900 today, assembled and tested,
whether its height adjustment "self sets" is yet to be determined.
Because these vacuums have Three year warranties, I'll put away
the UH50000 and use the UH5491900 - for the warranty period!
Maybe the older one will reside in my garage to be used on vehicles.
My only remaining concern is down the road, when I'm using either one from my
wheel chair, I may not be able to find bags and belts for them.
I can buy hundreds of bags and belts before ever reaching
the purchase price for one of the less durable, highly advertised,
Totally MESSY bagless models that have taken over the market!