Review on 🦈 Colorfullife Replacement Parts for Shark Ion Robot RV700, RV720, RV750, RV750C, RV755 | NOT Compatible with RV700N, RV750N | Replacement Part RVFFK700 and RVSBK700 by Bernadette Pacheco

So I have RV750. Everything works except for the brush. but i fixed it. On the opposite end, where you connect the square bar to turn it, it looks like a small nut in the middle. It's not a nut. Take off the whole yellow piece. You will then see 3 small holes around it to pop out the center holding this metal bracket (the one that looks like a nut at first glance). Pull out the center, then the latch. Put on the yellow color and the holder without the yellow middle part with two pins. works wonderfully. Without this, the roller will not rotate. Hope that helps!