It is not to difficult, a failrly good set of tools, is essential though, there is a good guide on here somewhere but I cant find it now, the only prob I had was I got the pump timing out, easy resolved, depends of your own level of mechanical ability and understanding of what it is your actually doing really, why not go as far as getting the cover of and have a look at the belt condition, if there is some black powdery rubber stuff its starting to wear
Dev