Why it Matters.
Manufacturers recommend annual or 100 hour service because it aligns with real world wear patterns especially in saltwater environments like Hawaii.
What Is Typically Included
Engine oil and filter changes for four stroke engines are standard. Gearcase oil is replaced. Fuel filters are inspected or replaced. The cooling system is checked. Batteries and charging systems are tested. The engine is scanned for stored fault codes.
Why Annual Service Matters Even With Low Hours
Engines that sit unused often suffer more than engines that run regularly. Moisture intrusion and fuel degradation continue even when the boat is idle. Annual service establishes a baseline and prevents unexpected failures during use.