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In my recent FD-12 project, I found the flywheel had a slight wobble to it. During the dismantle and restoration, I found someone had stuck a shim piece inside the flywheel hub and there were some cracks around the flywheel puller holes. Not good. I would surely pull your flywheel off and take a closer look – if it has a wobble, it may likely be bent. I would probably be on the safe side and replace it. As Frank noted, if a flywheel lets go while running, it’s not a pretty sight.
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."