Buying a used 2-stroke outboard can be a great way to save money, but you need to check a few key things. Inspect the compression, as uneven levels may indicate engine wear. Look for corrosion, especially in saltwater-used motors. Ask about maintenance history and test it in water if possible. Check for excessive smoke or unusual noises. Lastly, verify the lower unit condition and propeller. A well-maintained 2-stroke can last for years, but due diligence is crucial. buying a used 2 stroke outboard