Mayco LS Series Pumps - Piston Cup Replacement

[@synissilent9235]

My st-70 needs this so bad

[@LawnWolf]

I want to see that guy try changing cups on a pump that had afew hundred yards run threw it. I do this every day and it is NOT I repeat NOT as easy as this vid makes it out to be.

[@yifengxie9965]

Chinese supplier