I successfully repaired my weed eater one with the help of the comments on this thread. It was relatively easy, took me about 6 hours all in all, and about $20 for the snapper friction disk. The level of difficulty I would say, if you can change the oil from your car, you probably have enough knowledge to fix this. A little about the process I used. As mentioned, the snapper friction disk will have to be grinded wider. I used an angle grinder from harbor freight, with a metal grinding disk. Don't use a dremel, it will take you forever. Match the diameter with the original disk. To remove the friction disk, I worked from the left side of the mower, removing bolts until I was able to slip the friction disk assembly off. Once off, the assembly is composed of 3 pieces. The 3 bolts were a bi*ch to get off. I would not suggest removing the bearing assembly on the one side if you don't have to, the collar that holds it in place is also a bi*ch to remove and to put back on. Once you have the bolts off, replace the modified snapper wheel. One additional modification, as someone mentioned, the middle friction wheel should spin freely, but will not very easily with the snapper wheel. You have to use an additional paper gasket. I used a piece of cardboard that I measured and cut to match the paper gasket thats on the other side. So basically you are going to sandwich the snapper wheel with a paper gasket on each side, then put back the metal pieces and bolt back together. Then just put everything else back together. One other tip, to get the spring back on from the back side, I used a nylon string, looped it through the top part of mower that the spring hooks onto, hooked the string to the top part of the spring, and just pulled up hard and hooked the top of the spring where its supposed to go.
This mower was purchased for $100 on craigslist, only thing wrong with it was the friction disk when I bought it. For anybody considering getting a used one of these, I would not pay more than $100 if its broke, and $200 if its working. It really is an absolute piece of sh*t, and can't believe weed eater would put out a product like this with there name on it. If you weight more than 150 lbs, and have more than a 10 degree grade on any part of your lawn, the engine is not powered enough to carry you. The back side rattles, but I alleviated this by slightly pressing down on the brake.