20 Most Recent Shark Navigator Bagless Upright Vacuum - Page 4 Questions & Answers

try this linkhttp://www.sharkclean.com/cgi-bin/livew/site.w?location=b2c/product.w&mode=partsProd&product=NV100&frames=no&target=main&sponsor=000006&nocache=37908

oh..this happened to me often..if you can get n the corner where the thread s..i used a seem ripper to get the thread out and cut..if this doesn't help send a picture..the seam ripper is great cause it cuts through hair too

Same thing with my NAV22. Called them. They walked me through some troubleshooting and then they offered to send me a replacement power floor nozzle (the entire bottom piece). They said they don't want us to open it up to replace belts, so if you registered the product when you bought and it's been less than 5 years you should be all set...

It seems that your drive belt for the beater brush is stretched. This is a common problem -- if you flip the vacuum over so you are looking at the bottom, you should see several screws holding a faceplate in place. Unscrew these, and you should be able to get access to the beater brush and belt. Pull on the belt a little -- if it has a lot of give, or seems stretched or cracked, replace the belt and your vacuum should be fine. If it is not stretched or cracked, move the belt and look between the belt and where it holds onto the brush (there should be a little groove that the belt is sitting it). If there is a lot of debris or hair (I have long hair and this happens to me quite often) between the belt and the brush bar, clean it out, and you should be good. The squeaking noise leads me to believe that the belt is stretched and could be replaced.