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I've had this Bad Boy for about a month, and the Kawasaki died like it was out of fuel. I had put 6 gallons in each tank, so I couldn't have burned all that fuel. I checked the left tank. Empty. The right tank was completely full. Not going to take it back to the dealer until after the cutting season is over in another two months. The fuel line is hooked to the on-off valve but I haven't traced it to the tank. It's been too hot. Anybody ever experience this?

I think the crossover line going from tank to tank has a shutoff valve made into the line.

There is a shutoff valve that both fuel lines plug into. The valve has on and off. The next time I get on the mower, I'll put the selector in the middle and see if that works.

rainman14624 said:

There is a shutoff valve that both fuel lines plug into. The valve has on and off. The next time I get on the mower, I'll put the selector in the middle and see if that works.

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The tank crossover valve is either on the left position, for the left tank, or on the right position, for the right tank. There is no middle position that has fuel flow to both tanks.

rainman14624 said:

I've had this Bad Boy for about a month, and the Kawasaki died like it was out of fuel. I had put 6 gallons in each tank, so I couldn't have burned all that fuel. I checked the left tank. Empty. The right tank was completely full. Not going to take it back to the dealer until after the cutting season is over in another two months. The fuel line is hooked to the on-off valve but I haven't traced it to the tank. It's been too hot. Anybody ever experience this?

Click to expand...

Give us the model number and serial number of the mower. You may have a faulty valve or the wrong valve installed from the factory.
It's supposed to have a 3 Way valve.

Tiger Small Engine said:

The tank crossover valve is either on the left position, for the left tank, or on the right position, for the right tank. There is no middle position that has fuel flow to both tanks.

Click to expand...

MParr said:

Give us the model number and serial number of the mower. You may have a faulty valve or the wrong valve installed from the factory.
It's supposed to have a 3 Way valve.

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Something is goofy. The parts diagram shows a 3 way valve but the service manual shows a 2 way valve with the on-off lable for the valve on at least the 2025 model

MParr said:

Give us the model number and serial number of the mower. You may have a faulty valve or the wrong valve installed from the factory.
It's supposed to have a 3 Way valve.

Click to expand...

Bad Boy Maverick HD 48-inch cut with Kawasaki FX691V. Serial BMH48FX69105230006. Leftover '23 model that I got at a nice discount. Wrong valve makes sense to me.

Here's a photo of my valve, and it's obviously not the right one.

Actually, I would call that a typical bracket mounted inline shutoff valve. The question I would ask is if the valve is working and allowing fuel flow from one tank to the other.

That's a typical shut off valve. Take pictures of your mower, the valve picture, model number and serial number to your dealer and have him exchange it for the correct 3 way valve. With that valve, you will never get any gas from the other tank. Your dealer may be able to receive text messages and you can send him your information before going down there. This time of year there is typically a 3 week wait on repairs.

Thanks for the replies! Talked to my dealer and they’re going to swap it out. But, you are right about the wait time. I’m just going to get by with one tank until the cutting season is over. We’re getting a lot of rain so I’m cutting every 5-6 days.

Hello,

It would be a quick check to find where the problem exists, by choking off both of the tank hoses at the valve with vise-grip pliers and a rag, then remove the hose ends attached to the valve.

Gently loosen the pliers on the side in question to see if the tank or line is blocked or the valve is the actual problem. The valve is a simple "gate" style valve and there is really nothing to come loose or break inside them.

If there is still no fuel flow when the pliers are loosened, the blockage is at the tank or in the line from the tank is in question.

I would not be surprised if there is a slip-on rubber cap on the valve nipple or the tank nipple that someone missed during the machine assembly process. The selling dealer would not know this from their pre-delivery setup and inspection.

Those rubber caps are put in place on fittings, by the part manufacturer, to prevent bugs from making a nest in the open port fittings.