I used the BFH approach that Jerry used. Ditto on the importance of keeping the blows away from anything but the center of the balancer. I used the 2' side of a framing square as a straight edge to determine when the balancer was on far enough to line up with the water pump & generator pulleys.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.