I'm replacing waterpump seals, gaskets, and so on. Thought this would be an easy job. Pulled the water pump cover and couldn't get the impeller out (just spins). Checked out at few forums on this and got two different answers. 1) have to drain oil and pull the whole engine cover in order to be able to hold wrench on backside of impeller shaft. 2) just apply back pressure on kick start and turn impeller. Obviously, would like the easiest route, but don't want to break anything. Any other opions on which way to go. Can I just use the kickstart to hold back pressure while I turn the impeller off or do I have to remove the engine cover?