Home › Forum › Ask A Member › 1951 Scott Attwater 1-30 16hp › Re: 1951 Scott Attwater 1-30 16hp
July 10, 2015 at 5:04 am
#19788
The prop is a 9" X 9 1/2" 3-blade for all 1-30 models from 1950 through 1953 according to the 1956 Scott Atwater service manual, chapter titled: Section J – Outboard Motor Specifications. Also, Michigan sold props for these motors in 2-blade & 3-blade with the 2-blade props designated for light to medium weight boats. Early stock 509 props used 6 rubber tubing strips in the prop for ‘cushioning’ the shear pin. These can slip at speed and should be replaced with 6 round solid rubber pieces.