the best way i've found to, is to put the tool in a vice, put the freewheel on it and put a bolt through to keep the tool and freewheel in place. After making sure the vice and bolts are secure get a scaffolding pole and bend it to fit on the crank. It should then come off with no trouble. i've done it about five times and you barely need to push. Another thing i do is to put some grease under the freewheel when you put it on, it will always help to get it off!!! hope that helps.