I've never messed with this model but would imagine the splined freewheel tool for the particular freewheel and wrench would do the trick. The problem there is, there are a bazillion different freewheel removal tools. No clue where you are located but it's possible someone from the Cabe near you may have the tool needed and be willing to help.(If you are on the front range of Colorado, hit me up. I probably have the needed tool) Easy job with the right tool...