Small Engine Troubleshooting Problems? Ask a Mechanic Now.
What is make and model? Is this Yamaha Gold cart, G16 from earlier ? What is the output from the generator to the regulator? Has to be above 14 volts DC, or the regulator will not have enough voltage to send to the battery terminal.
Check the output of the generator, with engine running at half throttle, you will need to raise the rear wheels so you can check it. If generator is putting out at least 14 volts, the regulator should have output of 14 volts. If not, replace the regulator.
It is normal for the voltage to drop off when battery is fully charged. Does the battery stay charged or does it get so low it will not crank?
I would replace the regulator, it has to cut in and out for the battery to be charged.
With generator already replaced , yes bad regulator. They stick and do not let the current flow to the battery.
You can test the input from the generator,with a voltmeter, and the output voltage. If generator is putting out more than battery voltage, and it is not getting to the battery, the regulator is not working.
Yes, can be a short, or key can not be shutting everything off. If you turn key off and remove the negative cable, and touch it to the battery do you get sparking? Should be no sparking. If it sparks, something is on or drawing current.
This is new battery? New generator and new regulator. Dos the battery show more than battery volts when the cart is running?
Are you looking at voltmeter in dash or a test meter? the generator is going to get hot to the touch. It will get at least as hot as the engine. The voltage regulator should turn on and off, charging battery when voltage drops below settings. It will not stay steady.
Is this a new battery? I see no mention of you replacing the battery.??
oK>I had to ask. Thanks.
Did you ever try polarizing the generator?
To polarize an "A Circuit" system, connect the FIELD, ARMATURE, and BATTERY leads to the regulator. Connect the battery. Then, momentarily connect a jumper wire between the ARMATURE terminal and the BATTERY terminal at the regulator.