charging system

mati

Cadet
Joined
Mar 13, 2004
Messages
11
I recently aquired a 1986 mariner 20(non tiller & non elec start) I would like to know if this motor has charging system. On the side of the eng there is a terminal block. Two terminals are empty and two terminal/wires run to coils under the flywheel. These wires are seperate to any wires running from the CDI. If this a charging system is the voltage reg already there under the flywheel or should there be one external somewhere and I'm missing it. Also if the system is there what would the amperage be. Thanks
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: charging system

The two wires you see are from the 'charging' coils, yes. BUT, there is no rectifier (makes AC current into DC current) and no regulator. Mariner refer to this as a 'lighting system'. You can run lights on AC. DON'T EVER try to charge a battery with an AC supply. If you run down to your local Tandy or Radio Shack and buy a 'bridge rectifier' you will then have a battery charging system. The current is only about 6 amps, and there's no regulator on it, so use a proper marine battery. <br /><br />You'll have 4 terminals on the rectifier, one marked '+', one marked '-' and two marked '~'. Connect the '+' to the '+' on the battery, the '-' to the '-' on the battery and the two marked '~' to the 2 wires from the lighting coils. These aren't polarity sensitive.<br /><br />Good luck,<br /><br />Chris..................
 

mati

Cadet
Joined
Mar 13, 2004
Messages
11
Re: charging system

Thanks for the info. My only other question then is would regulator/rectifier that is used on some of the bigger lawn tractors i.e. kohler, briggs and stratton to charge batteries etc also do the job. It would seem to both work on the same principle.
 
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