Yamaha 4 stroke golf cart back fires all the time..Replaced coils and the carby but no change

It depends on the model, but they are usually wires in series to give 48 volts to the motors, so plus to minus on each them.

Cart positive lead to batt 1 + the - to batt 2 + to batt 3 - to Batt 4 + and the minus - of batt 4 to the cart.

Videos

https://www.google.com/search?q=how+to+connect+4+12+volt+batteries+to+Yamaha+golf+cart

You could also search make model manual

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3rd time I also had an issue with the file so the girl replaced it in 30 mins
there is one more but i don't remember its name it was 2 years back bitman something link this
Try it out brother

Replace the gear selector, it's probably worn.

faulty plug or plug lead or coil ....

did you leave the key on and kill the battery or a light or something double ck that battery , they will still light up the ignition and lights and ll but does not have enough to crank the starter , that is what is sounds like to me be put a jump on it or charge it and try again , when you turn on the ignition does the lights light up on the dash panal if so the batter is low

Look under the seat for a pressure switch.

2 stroke or 4 stroke

Engine got to much oil in it? Worn engine allowing fuel down into engine diluting the oil and raising the oil level? Blocked engine breather, pressurising the crankcase. Oil change and clean the breather. Worth a try

I find with two stroke engines the carb gets all gummed up if you store it for the winter. A good carb cleaning usually does the trick