Yamaha - Key, woodruff - 90280-05001-00 CLNCRE OEM is the only way

OEM is the only way to go

feels loose

Also used on select compatible Mercury Verado and Racing outboard applications

This motor connects directly using standard marine-grade terminal leads

Q1: Which Mercury engines does this compound work on

Yamaha - Key, woodruff - 90280-05001-00 CLNCRE OEM is the only wayYamaha Woodruff Key Flywheel & Shaft Alignment 90280 05001 00 Overview This woodruff key is one of those parts that keeps everything lined up behind the scenes. It holds your flywheel and shaft in the exact position they need to stay in so timing doesnt drift. Ive seen engines chase all kinds of issues that ended up being nothing more than a worn or slightly sheared key. Its a small piece, but its critical to how the motor runs every time you turn it