What should the compression be on a 2000 125hp Mercury outboard?

The compression for a 2000 125hp Mercury outboard should typically range between 100 to 150 psi per cylinder, with a maximum variation of about 10% between cylinders. It's important to ensure that all cylinders are within this range to ensure optimal performance and engine health. Regular compression testing can help identify potential issues before they lead to more significant problems. Always refer to the specific service manual for your engine model for the most accurate specifications.