Yamaha F150 4-stroke 2005 model

by Mark
(Houston, Texas, USA)

I have 200 hrs on this outboard. It was running fine for about 1.5 hours that with a new optima battery. On the water I turned off the engine for a few minutes and it would not turn over. The battery was dead with volt meter reading around 8 volts. I tried to boost with a lithium ion battery booster and it would not turn over - too dead. I then put in a new battery, the bilge pump immediately came on and engine started and the volt meter read 14 volts. The engine ran fine for about 30 minutes. The volt meter read ~14 volts when I started up with the new battery. I didn't pay attention to the volt meter after that and the engine stopped running after about 30 minutes and died the volt meter again read 8 volts.


Any ideas what could have drained the battery so fast to the point that the engine stopped running on its own?

Thank you very much!

Mark

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Yamaha Outboard Forum.