F2560 stalls

[Shady oak]

I have a F2560 front mount mower with a 72 deck. Have had it for 16 years. This summer it started to lose power briefly once the fuel was at half and under. This only happens when going downhill, and generally while turning left. It gets worse as the fuel gets lower, but never stalls out, just sputters like its running short of fuel. Its like the machine picks up air, and then when you level out, away it goes.

If it was a safety switch the fuel level should not seem to impact it. If it was a filter then it should do it anytime, any fuel level. Would seem the same for the pump, or for something in the tank. The fuel pickup tube comes to mind, but the part I can reach is solid and doesn’t appear to have moved. I can’t see into the tank to the bottom and wondered it there is another part to the tube that could have fallen off, or come lose and the tube picks up air. The consistency of this issue is baffling.

Since the tube I can feel seems pretty solid, it does not seem possible it has a pin hole wore into it? Anyone have any idea, or even a schematic showing the path of the fuel tube in the tank?

Thanks.

 

[RjCorazza]

Still could be the electric lift pump if it has one. Some machines can function on gravity alone when the lift pump goes out, not at all, or anywhere in between.

 

[Shady oak]

Still could be the electric lift pump if it has one. Some machines can function on gravity alone when the lift pump goes out, not at all, or anywhere in between.

Thanks. I had considered that idea also, and I think I am going to replace that first. Nothing involving the tank makes sense. Eliminate the possible first. Plus if it痴 the pump, when it completely fails I am toast.

 

[David_Kb7uns]

Have an RTV1100 with the optional fuel filter kit. Was having problem where it would start sputtering when the tank level went down and then just die. Hard to track down but it ended up being the fuel line going to the filter from the tank was blocked and with a full tank fuel was going backwards through the vent line on the housing to the fuel tank that was made for self bleeding and as it dropped then engine would loose power and die.