1641 not charging

[Bob/ohio]

I am trying to figure out how to check out my charging system on my newest Cub purchase. It is a 1641 with a Briggs Vanguard engine. The voltage reading across the battery when running is only about 12.4 volts at an idle and 12.48 above an idle. I am not familiar with the charging system on this engine. Any help would be greatly appreciated!
Thanks
Bob

[Bob/ohio]

I think I posted this question in the wrong location. Not used to navigating around the site. I wanted to post this in the Cub/MTD section. I have 2 Cubs, a 1650 and this newer 1641. Both are about the same tractors, just about 10 years or so apart. Both are hydros with hyd. deck lifts. The V twin in the 1641 is so much smoother than the single 16 Kohler in the 1650. The 1650 has a 50" mower deck and the 1641 has a 48" deck. It is going to be hard to figure out which one to mow the lawn with this year.
Bob

[R Bedell]

Bob:

I am NOT familiar with your model of Cub. However, to check the V/R in principle would be the same as the older Cubs.

Your tractor has a B & S motor in it. I suspect the issue lies at the V/R that is somewhere inside the shrouds.

Here is the test procedure for the older Cubs....... TEST

According to the Parts Diagram the V/R has two connectors to it. One connector (with two wires) come from the Charging Coils and the other one (single red/white wire) goes to the wiring harness.

If you can get access to this to check it out, the above test would be the same.

Now, this assumes, that the V/R is properly grounded and has zero ohms resistance between it's case and the Battery negative terminal.

[Bob/ohio]

Thanks for your reply! I will do some checking. I am trying to find a wiring diagram for the charging circuit. I am not sure which terminals on my regulator to check, as they are not the same as in the diagram you sent.
Bob