The 2-1/4″ bolt spacing on the bracket suggests the bracket was used on a motor originally equipped with a 6 volt starter. The 2-1/2″ bolt spacing on your new starter is the common spacing used on current 12 volt starters. Don’t know where you could find a 6 volt starter but you could probably find a good used correct starter bracket with the 2-1/2″ bolt spacing. I believe the bracket number you need is 317328 superseded to 126256. Here’s one link to a bracket and starter combination:
https://www.speedpromarine.com/products/copy-of-motor-long-block-crankcase-head-engine
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
