does anyone know a way to take of the pulley on a 2002wrx? tried already a pulley puller.

 

That is something you want a shop to do for you. I just had mine done and it only cost me $40, and believe me it was well worth the $.

 

search over at scoobymods.com there is a complete write up. Basically you need to remove the belt cover. Loosen tensioners on some belts. Put the car into 5th gear and have someone stomp on the brakes while you loosen the pulley with a 22 mm wrench.