Re: 2 antiques
It's a pretty easy job, but on your particular motor, you have to take the powerhead off of the leg in order to disconnect the shift linkage. Other OMC's have a little access port on the side of the leg for this, but yours doesn't. There are 4 bolts at the water pump housing (the bulge up above the anti-ventilation plate), and after the shift linkage is disconnected up top, it will drop straight down. You'll be looking at the lower unit with the driveshaft and shift linkage sticking out. The pump housing is right on top, with three or four small screws. If you're on salt water, good luck! There's a very small dowel pin in the shaft that drives the impeller which disappears rather easily if you drop it. The trickiest part of putting it back together is making sure the water pipe goes into the grommet on the top of the water pump. It WILL go together with the pipe out of place, but it won't pump. At the minimum, you'll need the gasket for the powerhead/leg connection, and an impeller. Depending on how old it is, and your local conditions, you may need a new pump housing as well. It's often a good idea to replace the grommet for the water pipe in the pump housing as well. Most OMC's have an O-ring right below the upper spline on the drive shaft- on most old ones, it's dried up or missing. It helps keep stray water out of the spline in the end of the crankshaft.
