Yamaha - Woodruff Key Engine Timing Component 90280-03017-00. Overview. This is one of those parts that's easy to miss until something goes wrong. I've pulled apart engines where everything looked fine, but the key had shifted or sheared and caused bigger issues. The Yamaha Woodruff Key 90280-03017-00 keeps rotating components locked in position so timing and alignment stay right where they should be. It's a small piece, but it plays a big role in keeping things running smoothly.. Key Features. • Secures Rotational Alignment - Keeps shafts and mounted components properly indexed.. • Maintains Timing Accuracy - Helps prevent slippage that can throw off engine timing.. • Precision Yamaha Fit - Manufactured to exact specifications for reliable seating.. • High-Strength Metal Construction - Built to handle torque and resist wear under load.. • Ideal for Service Replacement - Perfect for maintenance, rebuilds, or repairs.. Engine & Boat Compatibility. The Yamaha Woodruff Key 90280-03017-00