Here is the ’56 parts list.

Not meaning to find fault with Gary’s fine article, but in the interest of “Everybody has their way of doing it”, may I offer a tip? Don’t pull the powerhead, pull the exhaust housing. Remove the lower spring mount (two screws), and the reverse lock bail (couple of E-rings). Now remove the bunch of screws holding the powerhead to the exhaust housing and the whole exhaust housing will drop away. Works on high mounted Bailer pump motors right up to 33-40hp. Easy.

We were a Scott-Atwater service dealer back in “The Day”, so I had the pleasure of doing many of those pumps.

Guys,
Gary Orloff here, first of all thank you for your kind comments on my article on Scott Atwater cooling & bailing pumps.
The member I mentioned in the article ( John Hagerman ) got his impeller from Bob Long, Frank noted his Email address in his comment ! Bob’s impeller’s works great in both the cooling and bailing pumps if you actually need the bailer to work ! We didn’t use it in John’s motor and plugged the little hole that feeds water to the bailer as we didn’t feel it was needed for his aluminum boat.
With as much water as these pumps produce I don’t think it is really necessary to plug that hole !

One thing I didn’t mention was on starting a SA motor that hasn’t been used for a while, Priming the Pumps. Back in the 2015 April issue of “The Antique Outboarder” I wrote an article titled “What’s that Dimple for ? ”
Scott Atwater had a modification for their engines that was the installation of a flushing device if you ran the motor in salt water, but it was also a way to wet the pumps prior to starting them which helped the impellers to draw water up the suction tube. If you have a manual available you should be able to find the information on the flushing device and it’s installation ! If you don’t please feel free to contact me and I will get the information to you.

And Bill, stay away from the 10 blade impellers they don’t work ! Mumbles, it would be great if you could find those Honda impellers that can be used in a Scott Atwater and post their part number on this thread !

Thanks again guys

Gary