Yamaha - Diaphragm assy 2 - 69W-14369-00-00 Mercury-9-9HP-209cc-2016 A: A radiator cap assembly

A: A radiator cap assembly seals the radiator and regulates pressure within the cooling system to support efficient engine cooling

Engine Type: Inboard Marine

Most owners can replace it using basic tools by following the procedure outlined in their service manual

It plays a key role in transferring power through the system

Yamaha - Diaphragm assy 2 - 69W-14369-00-00 Mercury-9-9HP-209cc-2016 A: A radiator cap assemblyYamaha Diaphragm Assembly 2 Carburetor Fuel Control Component 69W 14369 00 00 Overview When a motor starts acting like its starving for fuel or just not responding right, the diaphragm is often part of the problem. This piece moves with pressure changes to help regulate fuel flow inside the carb, and when its fresh, everything runs smooth and predictable. Once it stiffens or wears out, youll notice hesitation or uneven performance pretty quickly. Its