Nice saw attachment!
I ask the guy that sold me the engines if he had any water pumps but he sold them awhile ago.
I bought a truck load of engines......well, at 500 lbs each I could only fit 3 in the bed.

The other 2,
1920 vertical Novo 3hp in the day were used for hoisting, conceit mixers, water pumps, saw rigs, just to name a few. This is a true hit or miss and runs off a buzz box and battery. The other two have governors and are not technically hit or miss.

1921 Ottawa 3.5hp This one was purchased new in 1920 by the sellers grandfather. Ottawa's were mostly used with drag saws. The 2 flywheel ottawa were rare as most only had 1 flywheel.

Ottawa with drag saw attachment
https://www.youtube.com/watch?v=-S0DaAXDziA
I'll most likely sell one down the road, but I'm not sure which one yet.