Outboard not charging battery

smallribber · 12 July 2020, 17:47

I went out today in my boat and the outboard which is a Yam V6 200HP 2 stroke was not charging the battery. Voltage at Chart Plotter was about 11.7 v At the battery (tested with a mete)r it was 12.4
V for most of the trip. When we finished the battery was at 12.3v so obviously not charging.

Any ideas what this could be

Thanks

Peter_C · 13 July 2020, 01:50

Follow the steps for testing as described in the owners manual. If you don't have an owners manual it would be a good time to get one. The manual will break the tests down and give you the specifications. You will also need a volt ohm meter.

smallribber · 13 July 2020, 05:09

Peter

Thanks for that help. I am having great difficulty finding a manual for my engine and cannot even find info on the engine despite it being a popular model. Attached is a pic of my serial number plate. Any assistance would be greatly appreciated

boristhebold · 13 July 2020, 07:22

These may help.

https://yamahaoutboards.com/en-us/ho...owners-manuals

https://issuu.com/1639110/docs/yamah...r_outboard_ser

https://www.crowleymarine.com/yg/LJP...-international

https://www.slideshare.net/fujdfjske...6004-143061302