I say stick with the problem and learn to love it. Since mathematics is so interconnected I'm sure you'll find your way.
It would help to learn about the history and context of the problem. Why did people invent this big machine? How does it relate to cool things in math that you do like?
Suppose you would change topic, how would this be different? You can always say something is too technical and not of interest. It's far better to take your topic and find a piece that does seem interesting and is not too technical (when looked from the right angle).
[EDIT: Douglas S. Stones]: Doing a Ph.D. requires hard work over a long period of time. The typical candidate needs to meet fairly high expectations, without understanding what these expectations are (e.g. what makes a thesis well-written?). It's very easy to become demoralised (as I became at some points during my candidature). It's not going to be possible to complete a Ph.D. without determination. So I also recommend the stick-with-it approach (although I do not know the particulars of your situation).
Furthermore, there's nothing stopping a Ph.D. candidate from studying other topics alongside their thesis topic (in fact, I think this should be encouraged to some degree).
