Help Identifying Motor

[19Dory]

Sticker on motor is gone. Welsh plug numbers are D174407. Have searched these numbers on several sites and have came up empty. Any help is much appreciated. Thanks.

[boats.net]

Those numbers could be a serial number but would need to know what horsepower it is.
Look at this link to see if this is same as yours, https://www.boats.net/catalog/mercur...-81735291-3cyl