Yamaha - Woodruff Key - Engine Timing Component - 90280-05029-00

Overview

This is one of those small parts that does a big job behind the scenes. I’ve had engines come apart where everything looked fine until you find the key sheared and the timing thrown off. The Yamaha Woodruff Key 90280-05029-00 keeps critical components locked in place so nothing slips under load. It’s simple, but it’s absolutely essential to keeping everything running the way it should.

Key Features

• Locks Components in Position – Keeps shafts and rotating parts properly aligned.

• Supports Accurate Timing – Helps maintain correct positioning for engine operation.

• Precision Yamaha Fitment – Built to exact specifications for reliable engagement.

• High-Strength Metal Design – Made to handle torque and resist deformation.

• Service-Friendly Replacement – Easy to install during maintenance or repairs.

Engine & Boat Compatibility

The Yamaha Woodruff Key 90280-05029-00 is used across a variety of Yamaha outboard engines and marine equipment.

It is commonly found in assemblies such as crankshafts, flywheels, and other rotating components where alignment is critical. Always confirm compatibility using your engine model and parts diagram before installation.

FAQ

Q: What happens if a woodruff key shears?
A: It can cause components to slip, leading to timing issues or engine damage.

Q: How can I tell if the key needs replacing?
A: Look for wear, flattening, or any signs of deformation.

Q: Should I reuse an old key?
A: It’s better to replace it to avoid potential failure.

Q: Is installation complicated?
A: Not usually, but it must be seated properly to work correctly.

Q: Does corrosion affect woodruff keys?
A: Yes, especially in marine environments, so regular inspection helps.