Using your Marin Rift Zone Junior 26 kids mountain bike is a breeze. Just hop on, pedal, and start exploring the trails. Before each ride, make sure to check the tire pressure to ensure a smooth and safe journey. Also, give the brakes a quick test to make sure they're working properly. When it comes to maintenance, keep the chain clean and lubricated regularly. This will help the bike run smoothly and extend its lifespan. After riding in muddy or wet conditions, wash the bike with a gentle stream of water and dry it thoroughly. Avoid using high - pressure water as it can damage the components. If you notice any unusual noises or problems, it's a good idea to take it to a professional bike mechanic for a check - up.