It also helps if you have arms 4 feet long. I swapped mine out a few years ago. I agree with the post above, make sure your kids and wife aren't around. I removed it from the bottom after removing the starter but had to install it from the top due to not enough reach to get the bolts started. The lever arm is spring loaded. It was a real pain trying to push the pump into the block, hold it there and start the bolts with one hand.