its very simple look at the timing belt on the cam.
when you see it, start pulling at it with ur fingers, or get a flat head scewdriver and push it out (but be very careful not to damage ur timing belt)
correct the timing,
and slip it back on.
also after you take the timing belt off the cam, it would be a good idea to have a string or something and tie it up to something so it doesn't lose its grip on the bottom.
its really very easy.
