Yamaha - Oil pressure switch assy - 67F-82504-00-00Yamaha Oil Pressure Switch Assy Engine Monitoring Component 67F 82504 00 00 Overview When you get an oil warning or inconsistent readings on a Yamaha, the oil pressure switch is one of the first things I look at. This part monitors oil pressure and tells the system if somethings off, which is critical for protecting the engine. Ive seen engines go into warning mode just because the switch wasnt reading correctly. When its working right, you get