Small Engines (Lawn Mowers, etc.): charging problem b&s 19hp, mtd yardman, solenoid switch

Question
QUESTION: I swapped engines on my 1995 mtd it came out with a 17hp b&s . I got a deal on a 19hp b&s .  The wiring harnesses varied a lot but i finally got it to start and the electric  clutch to engage; but after an hour or so the clutch i suppose is draining the battery and it disengages.  I have to charge the battery every time i start the mower.  have put a new battery in with same results.  I believe i do not have the alternator connected properly.   The 19 hp came off a craftsman the 12v dc lead from the alternator went to the solenoid switch then from there to the ignition then to battery .  the mtd yardman was connected differently. could you explain to me how the current from the alternator flows back to the battery? thanks in advance

ANSWER: Hello Kevin:

Can you Send me the Model, Type and Code Numbers Off Both Engines, Please. It May be the Stator is Not the Correct Size for the Electric PTO. You can Wire the Charging Wire Directly from the Stator (or Voltage Regulator if the Engine has One) to the Ign Switch or the Solenoid and Complete the Charging Circuit. It Takes a Certain Stator to Use the Electric PTO. You Might be Able to Change the Stator from the Old Engine to the New One. Thanks.

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John

---------- FOLLOW-UP ----------

QUESTION: Hello John, here is the information you requested. the original motor was model 311777 type 0139-e1 code 98041320  the replacement i used is model 42a707 type 1251-01 code 9410315a. I hope this helps in troubleshooting my charging problem. I have a meter and somewhat know how to use it i was baffled as to whether it was charging at all or just not enough as well as whether the stator wire can connect direct to the + on battery or if it has to go through a switch ie ignition or solenoid to break the flow when mower is not running to avoid draining the battery.  your help is greatly appreciated.

Answer
Hello Again Kevin:

Judging from the Breakdowns, Both these Engine can Use the All the Stators that are Required for Specificate Applications. Here is a PDF Site Addy for Checking the Stators. http://www4.briggsandstratton.com/miscpdfs/RNT/alternator_id.pdf . The Stator at Least Needs to be Wired to the Ign Switch to Disconnect the Battery when the Engine is Not in Use to Prevent the Battery from Discharging. You can View a Breakdown/IPL of the Unit at this Site Addy; http://www.briggsandstratton.com/maint_repair/manual_and_more/doclist.aspx?categ and Enter the Model Numbers (XXXXXX) and Type Numbers (XXXX) in the Appropriate Boxes and Click GO. Then Select Download PDF. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John