Yamaha - Oil Warning Unit Engine Monitoring Component 7LG-85690-00-00. Overview. Oil systems are one thing you don't want to guess on. I've seen engines saved just because the warning system caught an issue early, and others that didn't have that same luck. The Yamaha Oil Warning Unit 7LG-85690-00-00 is what keeps you alerted before small problems turn into big ones. It's one of those parts you hope never has to speak up-but you want it working when it does.. Key Features. • Monitors Oil System Status - Detects issues with oil levels or flow to protect the engine.. • Early Warning Alerts - Helps notify you before serious engine damage occurs.. • Yamaha-Specific Integration - Designed to work with factory warning and monitoring systems.. • Reliable Sensor Performance - Provides consistent and accurate system feedback.. • Durable Marine Construction - Built to handle vibration, heat, and harsh environments.. Engine & Boat Compatibility. The Yamaha Oil Warning Unit 7LG-85690-00-00 is desi