Looks like someone ground off the hand crank lugs. The holes on either side of the center is where the puller will fasten to pull it. The socket trick in my other post should work to get it off. As for the putting it back on I used the BFH (Big F****** Hammer) method. Just be sure to use a drift and strike it on the lugs when driving it on. It's several orders of magnitude tighter than a pressure fit. It's a press fit. They used to use a special tool to center the timing cover seal before driving the balancer on. Some slide the balancer on far enough to center the seal before tightening the timing cover fasteners, tighten one or two, remove the balancer again and tighten the rest. I made my own special tool.
You can use a straight edge across the waterpump pulley to determine when the balancer is on far enough.
