Google translate, good enough?

Today, I've received a package from Amazon containing router bits (for wood working not IT). It contains a so called "User Manual" which is obviously so badly translated, I assume automatically, that it will only fool a spell checker, that it is actually written in German.

I often hear and read good things about Google Translate but every time I read something from it, e.g. when a browser or webpage helpfully decides that I would prefer a butchered salad of German words instead of an English web page, I am repulsed.