I know this has been covered before, but I sure can't find it when I need it. I think the pump shaft is threaded into the end of the output shaft. There is a 5/8 flat on the shaft and I have been trying to turn it forward---the same way the engine turns. What's the trick?? Also, the book says not to take off the pump hoses--- Why?? I know I'll lose some oil and make a mess but aside from that? Thank you all for your expertise!