Honda BF75DK4 - BF100AK1 400 Hour Maintenance Kit - 06161-ZY9-010. Stay on top of your scheduled service with the Honda 400 Hour Maintenance Kit for BF75DK4 through BF100AK1 outboards. This kit is built to make major interval maintenance easier by grouping commonly replaced service items into one kit part number, helping you protect performance, support clean operation, and avoid missing key components during your service.. Key Features. Complete 400 hour service kit for Honda BF75DK4 through BF100AK1 outboards. One-kit convenience helps reduce ordering mistakes and saves time. Supports consistent performance and long-term reliability. Ideal for preventative maintenance, seasonal service, and shop efficiency. Genuine Honda kit components for proper fit and dependable function. Fitment. Honda BF75DK4. Honda BF100AK1. Why It Matters. The 400 hour interval typically covers critical service items that help keep fuel and lubrication systems performing correctly under load. Using a dedicated