hey i just pulled out my sons pump on his 550 because it was having power issues. found impeller to be badly burned from cavitation and part of 1 blade was broke off. while i'm changing this should i clean out the grease and refill it with fresh grease? or should i just leave it alone? also if i need to change it do i just remove the 3 bolts on the pump cone and tap it to break it off or is there a differant process to removing it? thanks, steve
also if anyone has a good impeller please hit me up. looking to go used and cheap. thanks