I need detailed drawings for my 75 40hp rude. I have the online version of the seloc manual but I dont find the pictures i want. I want to replace the impellor but I don't know how to get the lower unit off. I unscrewed the six bolts, but aparently that isn't enough. i know there is a shift rod screw I need to undo but is that all ther is to it. I hesitated taking the shift rod screw out until I had found all other connecting points. With those six bolts out, I hit the cavitation plate with a rubber mallat, but that didn't seem to make the lower unit move at all. Surely, that shift rod wasn't the only thing holding the lower unit on was it.