Here's a wheel bearing puller I made for the 750 from a concrete anchor. It's 5/8" OD (originally) - made for a 1/2" bolt. I ground it down until it juuuust fit inside the bearing, then whacked the setting pin using a punch. Then from the other side of the wheel, put a punch on the outer rim of the anchor and hammered it out. Once the first one is out, the other one is easy. The picture shows a virgin anchor on the left and a 'customized' one on the right.