When to change the water pump on a 2001 Subaru forester?

You should consider changing the water pump on a 2001 Subaru Forester if you notice signs of leakage, overheating, or if the pump is making unusual noises. It's also recommended to replace the water pump when you change the timing belt, typically every 105,000 miles or 7 years, as they are often replaced together to prevent future issues. Regular maintenance checks can help identify any potential problems before they escalate.