OK now that I have looked at the photo's on my desk top I can see what you have so just hook the earth up to the body & toch power lead to the terminal but as mentioned make sure you are holding onto it or if it is working it will kick out of your hand. Make sure you leave the nut on & don't hit the thread with the jump lead so you don't damage the thread. If it is not working it may have stuck brushes or they may need replacing.

