I don’t know what happened to my answer …
What I remember saying was the water intake is through the propeller hub. The inside of the pump rotor must be snug against the eccentric that drives it. The gear case bearings are sintered bronze. The material is porous and holds lubrication. This decreases friction and reduces ware. The down side is it allows oil into the pump housing causing the rubber to swell. So, instead of a space on the outside to pump water, there is a space inside which allows the eccentric to spin freely without pumping water. The carburetor is strictly Gale. It is used on the 3 and 5 horse models through 1955. The high speed jet is the only fuel mix adjustment. As you retard the spark the carburetor Venturi closes. Where it stops determines the idle mixture. The adjustable screw in the end of the port side of the carburetor rides against a taper in the Venturi. Screwing it out allows the venturi to close farther. If this screw is lost be sure the replacement has no rough edges. If the taper on the venturi is damaged, it will be hard to adjust the idle. I like to speed up the motor a little when screwing it in to take pressure off the ramp. . . . 😀
