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(2004 Yamaha 200 HPDI) Ran the boat this weekend and got the dreded warning buzzer. I don't have the yamaha tach so I don't have any lights,just a steady warning buzzer. I checked the engine mounted fuel filter and didn't see any water. I assumed it was an overheat alarm and I changed the thermostats and water pump. Ran it up on the muffs and all was well for about 15 minutes then the buzzer came back. I tuned the key on and the buzzer was steady. I started unplugging cannon plugs to see what would silence the buzzer and it stopped when I disconnected the connection from the engine mounted oil tank. I reconnected it, buzzer came on and then I removed the sensor from the oil tank and slid the float up and the buzzer stopped. Then I noticed the oil level in the engine mounted tank was at the bottomline, about 1/3 full. I filled the tank to the top line and the buzzer has stopped. When I turn the key on I can hear the oil pump for a few seconds but when I hold the emergency oil switch up nothing happens. I suspect a bad oil pump in the remote oil tank. Any ideas before I purchase one? Sorry for the long post, just wanted to get all the info out there.
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