I have a Yamaha 115 four Stroke. Year 2000. Fuel Injection.
It has Yamaha a digital Tach. This shows rpm and temp an oil pressure. There are no buttons on it. When I flick the ignition switch on without starting up the engine, it briefly shows the number 88. It then reverts to zero until I start the engine. It then shows rpm as would be expected. Is this number 88 showing the hours? I have only just bought the boat, so I don't know whether it changes or not. I know the Suzuki's have a similar system to show hours.