1. Lay the shock absorber on a level, horizontal surface.
2. Using a 2-3 mm {0.08-0.12 in} drill bit, drill a hole in the high-pressure side (area indicated by A), and allow the gas to escape.
3. Using a 2-3 mm {0.08-0.12 in} drill bit, drill a hole in the low-pressure side (area indicated by B).
4. Place the shock absorber with the hole drilled in Step 3 turned downwards. Move the piston rod up and down several times to drain out the oil.
5. Cut the tube at the end of the shock absorber, and completely drain the oil out.
6. Properly dispose of the waste oil according to waste disposal laws.