When do i change timing chain on my 2003 Honda CR-V?

According to the vehicle maintenance schedule provided in your owner's manual, there is no specific Honda-recommended interval for changing the timing chain in the 2003 Honda CR-V. This means that the timing chain is considered to be a "lifetime" component that should not require replacement under normal driving conditions. However, timing chains can still stretch or wear over time, so if you notice any unusual engine noises or vibrations, it's a good idea to have the timing chain inspected by a qualified mechanic. To protect your vehicle, it's recommended to check your owner's manual for specific maintenance intervals and guidelines related to your vehicle's model, year, and individual driving conditions.