How to replace with OR3500?

Rebecca

Good afternoon! Colleagues, please tell me how to replace the original needle rotor on the Aquamedics OR3500 pump with a fuzzy one? The original plastic part moves back and forth but doesn't come off, and I'm afraid to break it... I've pulled and pulled... it just won't come off (damn it...). It looks like the end is flared. Best regards, Imir.

Katie4842

Take a wrench - the size of the diameter on which the impeller is placed. Insert it between the rotor and the impeller and push it out.