How much water should this be pumping pulled the prop and looked at the water pump rotor just cant see how this thing works changed a few impellers you can see how they pump but this I cant figure? concerned it's not pumping.
It should slobber quite a bit of water out the slots on the rear any time it is running.
Water pump impeller (properly called a "rotor") should fit snugly on the eccentric in the center, and be touching the housing somewhere on the outer OD. The other side should have approx 1/8" clearance and the depth should be same as the cavity. If you watch that space as you slowly rotate the shaft you will see it appear on the intake side of the pump and progress around to the outlet side, where it disappears. Then it re-appears at the intake side and takes in another gulp of water.
Those rotors are notorious for swelling up from grease leaking out of the gearcase.
EDIT: The 1959 motors have a different prop without the water holes. It scoops the water from around the hub.
"Rotor" and "impeller" are both used to describe what Gale calls a "rotor". Whatever you call it, it is the doohicky that pumps water up to and though the powerhead to cool it. It also is often called a "wobbler pump" by old timer outboard guys. It really isn't that unusual. A number of manufacturers also used wobbler pumps, some behind the prop, and some on the vertical drive shaft. Some names you might recognize are Gale, Johnson, Martin, Scott-Atwater, McCulloch, Chrysler, etc. Here is a picture of one on a Scott-Atwater that was used for many years
Another Question please
Regarding grease plug I have no drain screw or gasket on other side of the gear housing from it just two small holes about 3" apart don't see any threads in either of them but could be wrong also would like to confirm that Lubriplate 105 is the recommended grease for this application.
Oh, but it does have a drain/fill screw on one side and a vent screw on the opposite side. The vent screw looks like an ordinary screw. If you look real closely, you can see it on mine.
Yes, Lubriplate 105. Or John Deere Cornhead grease. But the Lubriplate comes in a handy squeeze tube.
See the two small holes above the screw which I have jsut went to look at it again what looks kike to me is a grease nipple on closer exam I can see what looks like the slot of a screw sticking under it ?
Those two holes are drain holes. They drain cavities inside the case. If not drained, water in there could freeze and bust the case. They are almost always plugged up with dirt and crud. Freezing is no problem here in Florida. I have no idea why some genius decided to modify yours.
I only have about seven of those motors. The screw I pointed out is the vent screw---trust me.