intermitent voltage regulator


LawnSite Member
2015 John deere 652r-mod with Kohler 25hp efi model ECV740-3019. Mower starts and runs normal at first but then the regulator turns off so battery eventually goes dead. However if I shut the mower off before the battery dies I can restart the engine and regulator works fine for the rest of the day. The next day it happens all over again. I can start the mower and watch my voltage meter until the regulator turns off, shut the mower off and restart it and then it runs fine. Any suggestion appreciated


LawnSite Fanatic
chesapeake, va
Yeah, well, check the charging voltage before the reg. dies. Then check it post mortem. Should be around 13.5-14.5v.dc. Check the regulator B+ wire/terminal connection.
Check yer fuses, especially the charging circuit fuse and holder.
Check grounds and all cable/ harness connections.
Check out the Kohler site and get ya a manual and wiring diagram.
Scroll down and pick yer motor.