Hoover windtunnel vaccum U6445-900 motor not

There are a number of Hoover vacuums that are subject to a recall due to an overheating on/off switch. Check out this web site to see if your is included. You'll need the model number and serial number from the back of the unit. The manufacturer will direct you to an authorized repair center for a free replacement of the defective switch.
http://www.cpsc.gov/cpscpub/prerel/prhtml05/05156.html

i believe that is a fairly new model like 2 to 3 years old.if so on the back where the cord hanger is there are 2 screws take them out,then on the back of the handle there are 2 screws take them out.the handle should slide out towards the back.you can buy the revised switch already in the handle for $28.00.no wiring involved it plugs itself in when you put the handle back on