I have a nearly new Weed Eater Featherlite weedeater. It's the FX26sc. It keeps jumping out of gear. I've tightened everything over and over. The weedeater will work just fine and then act like it disengages the drive train. That's the only know how I know to describe it. Any help would sure be appreciated.

Hi,
First thing to say is that it is probably under warranty. It is in the driveshaft, but since these are split-shaft machines, there are 4 ends that could be the culprit (it generally is the ends) either out of place or rounded/broken.
I realize that it is probably a mass merchant machine, but a receipt in hand might get a replacement/refund if new enough. At any rate manual is here:
http://weborder.husqvarna.com/order_static/doc/WOUS/WOUS2009/WOUS2009-FX26SC-545186796-952711941.pdf
And parts breakdown is here:
http://weborder.husqvarna.com/order_static/doc/WIUS/WIUS2008/WIUS2008-FX26SC-545011590-952711941.pdf
But it should probably be warranty; explore the possibilities with the point of purchase first and a warrnty dealer second.
Peace,
Clarke