I just picked up a 77 Johnson 35 that I’m trying to get running. I did a full carb rebuild and clean. Then I put in a new head gasket which bumped compression up to 90. Still low but at least it’s even across cylinders.
I noticed the flywheel was moving the entire magneto assembly so I...
I thought that might be the issue, but I can’t find the dang part for this motor anywhere. I can’t even seem to find the driveshaft bushing on the F50 parts diagram.
This may be another thread with no resolution, but I’m having this exact issue. Definitely sounds like something in midsection or lower. Do these motors have driveshaft bearings that would go bad?