The mower:
John Deere 757, 25 HP Kawasaki, 60" deck, 800-ish hours. Serial # TC0757B062XXX
The problem:
The engine fires and runs, but when you put it under a load, it's like the mower is starving for fuel. Engaging the PTO almost kills the engine, and it won't get up to full engine speed with the PTO engaged. Also, if you try to mow a hill leaning to the left, the mower almost dies. If the mower is tilted to the right while mowing, it does OK.
I've had this mower for a few years, and it's away ran great. It's stored outside, under a cover. A few weeks ago, my wife was about to mow and found the cover removed, with the fuel cap off, and the fuel tank empty. We suspect someone came in the yard a stole the gas out of it. My solution was to completely drain the tank with a vacuum fluid transfer pump, and then refill it with fuel. I only run non-ethanol. And my fuel is always stored indoors. After refilling the tank, and fired the mower up, we noticed the low power issue. I replaced the fuel filter and the fuel pump with OEM parts. I also blew some compressed air backward through the fuel hose going to the tank, to make sure there wasn't an obstruction, but the problem still exists.
I'm at a loss, and don't know what to do next. Thanks in advance for any help you guys have for me.
John Deere 757, 25 HP Kawasaki, 60" deck, 800-ish hours. Serial # TC0757B062XXX
The problem:
The engine fires and runs, but when you put it under a load, it's like the mower is starving for fuel. Engaging the PTO almost kills the engine, and it won't get up to full engine speed with the PTO engaged. Also, if you try to mow a hill leaning to the left, the mower almost dies. If the mower is tilted to the right while mowing, it does OK.
I've had this mower for a few years, and it's away ran great. It's stored outside, under a cover. A few weeks ago, my wife was about to mow and found the cover removed, with the fuel cap off, and the fuel tank empty. We suspect someone came in the yard a stole the gas out of it. My solution was to completely drain the tank with a vacuum fluid transfer pump, and then refill it with fuel. I only run non-ethanol. And my fuel is always stored indoors. After refilling the tank, and fired the mower up, we noticed the low power issue. I replaced the fuel filter and the fuel pump with OEM parts. I also blew some compressed air backward through the fuel hose going to the tank, to make sure there wasn't an obstruction, but the problem still exists.
I'm at a loss, and don't know what to do next. Thanks in advance for any help you guys have for me.