Assuming you need to replace the handle on a spade:
Tools needed: screwdriver, hammer and wood saw. You will also need a new handle.
Instructions:
1. Unscrew the old handle from the metal part of the spade, using a screwdriver. If the screws are rusty and won't come out, you may need to use some WD-40 or similar lubricant.
2. Once the screws are out, gently tap the old handle with a hammer until it comes loose from the spade.
3. Take your new handle and line it up with the holes on the spade head. Screw in the new screws (included with most handles) until they're tight.
4. If your new handle is too long, you'll need to cut it down to size with a wood saw. Just be sure not to cut off too much - you want there to be enough length so that you can comfortably grip it when using the spade