There is a manual relief valve. There is a hole low on one of the transom clamps to access it. Unscrew it with a big screwdriver 1 or 2 turns. Then get a few buddies to help tilt it up. It's heavy and slow.
There is a manual relief valve. There is a hole low on one of the transom clamps to access it. Unscrew it with a big screwdriver 1 or 2 turns. Then get a few buddies to help tilt it up. It's heavy and slow.