Re: Release valve screw frozen on 1995/225 Johnson Ocean Runner?
I'm going to dance around the relief screw topic. You can try some Kroil, etc, but they're often stuck to a degree. Gentle use of san Impact driver can be helpful. If damaged, the valve assembly come out via a circlip, although these can be stuck too.
Your best bet is leave it alone, if you can.
To do just the motor, only the top pin needs to be removed, then the unit can be rotated out so you can get to the 4 electric motor bolts. Tap the heads a bit, as these can snap off.
No need to bleed the system, although running it up/down will accomplish this if needed.