I've got a 1972 125hp johnson, and it's overheating now. I put it on the muffs and started it, at first the water was peeing out just fine but now the second I start it up the water stops flowing, so naturally I shut the engine off imidiately. I have a clymer repair manual but it's not the best for a description on how to remove the leg from the outboard. Any tips on how to remove it to get to the impeller. I know I undo the four bolts as well as the one on the trim tab, Now I'm lost with unbolting the shift linkage from the leg. any help will do. thanks.