Quote: Originally Posted by cmason164
I have the same problem in my 300 4x4. I replaced the voltage regulator/rectifier, and that did not fix the issue. Any help would be appreciated.
Get a copy of the service manual and go through the procedure to test the stator coils. Also look for burned wiring or poor connections between the battery and the voltage regulator output and the Voltage regulator input and the stator.
If you have charging problems, Basically there are just 4 things to check, wiring between the battery and the voltage regulator, the Voltage regulator, wiring between the regulator and the stator and the stator it's self. Also a 5th problem area, that is a BAD battery, quite often batteries shout out internally or fail to take and hold a charge. Poor ground connections can also cause problems.
A wiring diagram and a Volt/Ohm meter is helpful when trouble shooting. Diagrams can be downloaded for most cats from the mower parts link for service manuals that has been posted 1000's of times on this forum and link also found in my signature. Even if a wiring diagram is not available for your particular year or model getting one that is closest in year and model might be helpful and close enough.