Yoni159, I am just going to agree with some others in that you have to get the right tools. In fact, I just changed my belt and (with the exception of cracking the variator/clutch nuts and re-torquing with a torque wrench) I did it all with the tools I keep underseat all the time. I dont know where you live or what your financial situation is, but all lot of the problems that you have working on your bike are lack of necessary tools. For this job, you at least need a 19mm socket to crack those nuts, and a variator/clutch holding tool (mine was $15 on Amazon and has worked great through two of three belt changes that I have to do.).
Now, you can MAKE a variator holding tool. It wouldn't be that difficult... but you would need tools to make the tool! and the nuts can be cracked with a breaker bar on a 19mm wrench. Besides that, you just need an 8mm socket wrench (with some extensions) to get the covers off. If you are in the U.S. , dont shy away from the Harbor Freight cheap tools. They are better than going at it with no tools. If you are not in the U.S. and happen to be somewhere in the third world with a great bike... I feel for your situation. But you have to find a way to get a few tools. Beg, borrow, start a coop.... something.