View Full Version : 15 hp yamaha charging

01-23-2004, 06:21 PM
i have a 1994 yamaha 15hp pull start and i would like to know if i could charge a battery with it it has two wires that come out from under the fly weel with a plug on the end what are the wires for

01-25-2004, 11:26 AM
" Grady,

What color are the wires you are talking about? They may be for charging a battery, but I would like to be positive about this before saying for sure. I can check the wiring schematic and give you a definite answer.

Tony "

01-25-2004, 09:43 PM
The wires I am talking about are both green.

01-26-2004, 09:58 AM
" Grady,

These wires deliver A/C current for accessories such as lighting. In order to charge a battery, you would have to add a rectifier/regulator, which would not be very difficult. I don't know why the manufacturer does not include this in the manual start models. You could look up the parts that you would need at the Yamaha website, but you would have to use a model number that corresponds to an electric start version of your engine.

Tony "

Albert Dico
11-01-2006, 07:58 PM
"dear sir,
maybe in the wrong section...
I a 15 yamaha and need to solve a problem
The engine block is frozen
Could you help with ideas how to solve this problem. Thank you in advance
Please answer to my email address since I am not registered on this site
[email protected]

Ryan M
02-10-2007, 04:03 PM
I wouldnt plan on charging much with a 15hp motor. It's probably only around 10 amps