Avoid using puller as they won't work on these ones. The outer part is bonded to the inner. The pulley won't come off due to the timing sprocket and crank pulley sticking together. The best way I have found to get the pulley off is to spray penetrating oil where the timing sprocket roll pin enters the crank pulley, and also into the contact surface where the crankshaft contacts the pulley. Let it sit for a while. Try working the pulley side to side (by grabbing it with both hands on opposite sides, pull with one hand and push with the other). Sometimes this is enough. If not, I use a hammer and a thick brass punch, I'll tap on the center metal portion of the pulley at alternating points (12 then 6, 3 then 9, and so on). Between these two methods, it will come out for sure.