I have a Yanmar 2GM 20 in my 2004 Beneteau. For a while I had been suffering from the dreaded push the start button and nothing happens syndrome. I read all the threads and I have the service manual with the wiring diagram. The wiring diagram show no connections after the 30 amp fuse at the engine to either the white or red wire so I decided to run new wires (proper tinned marine wire #10, not like the junk in the Yanmar harness) from after the fuse to the key and starter button. Did that and now the engine engine starts first time every time even when the boat boat has not been on the dockside charger for several days.
In an abundance of caution I started the engine and checked the voltage at the meters on the below deck panel, the meters so no change in voltage after I start the engine, also the charge warning light on the engine panel at the helm does not come on when the key is turned to the on position, the other warning lights come on and the warning buzzer sounds. Other than removing the alternator and taking it to a shop (its hot and humid and I really don't want work inside a hot cabin if I don't have to) any ideas for me to check?
In an abundance of caution I started the engine and checked the voltage at the meters on the below deck panel, the meters so no change in voltage after I start the engine, also the charge warning light on the engine panel at the helm does not come on when the key is turned to the on position, the other warning lights come on and the warning buzzer sounds. Other than removing the alternator and taking it to a shop (its hot and humid and I really don't want work inside a hot cabin if I don't have to) any ideas for me to check?