The answer to 'how to maintain gutter' is to clean your gutters regularly, typically 1-2 times per year. Gutters should be cleared of leaves, twigs, and other debris to prevent clogs and water backups that can lead to damage to your home's foundation and roof.
Start by using a ladder to safely access your gutters. Wear gloves and eye protection, and work carefully to avoid falls. Use a small hand trowel or gutter scoop to remove the debris, placing it in a bucket or bag for disposal. Use a garden hose to flush the gutters and downspouts, ensuring they are flowing freely. Consider installing gutter guards or covers to reduce the frequency of cleanings.