Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hi, my name is***** will be assisting you.
Can you give me a little more detail about your stalling issue? Does it stall immediately after starting? How long will the engine run prior to stalling? Do you have a fuel solenoid on the bottom of the carburetor?
So once it stalls out can you tell me if there is still fuel in the carburetor bowl or not?
As soon as it stalls, clamp the fuel line off going to the carburetor and remove the bolt in the bottom of the carburetor bowl or remove the fuel solenoid. If fuel runs out then we know that you still have fuel there and will need to look at the carburetor jetting otherwise we would focus on the fuel pump and possibly fuel tank vent system.
Just let me know what you find and we can continue our troubleshooting process.
My next step would be to check the fuel solenoid and make certain that it is functioning properly. Make certain that it has a constant steady voltage going to it when the ignition key is turned on and make certain that it is opening all the way when voltage is applied. If the solenoid is loosing voltage periodically or not opening all the way up it would cause a fuel starvation problem.
With the information that you have provided I would suspect a bad brake safety switch. Since you can run the machine with the blades engaged it tells me that the seat switch should be okay. I suspect a bad contact in the brake switch.