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Discussion Starter #1
My 18.5 Lawn Tractor has lost its spark. I changed out the Magneto and still no fire. I removed the fly wheel and found no noticeable damage. Any idea?
 

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certified tractor nut
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what engine is it
 

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Discussion Starter #3
B&S 31P777
Found the spark problem know chasing the fuel delivery problem. Look like the fuel pump is week. Do you happen to know if the fuel tank has a check valve on it? Getting a small amount of fuel line coming from the tank. Installed a fuel filter but the pump will not fill it when try to start the motor. Tried to blow back to the tank but will not flow back. Pressurized the fuel tank to check the gravity flow and it was a small amount. That why I thinking there might be a bad check valve if there is one.
 

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certified tractor nut
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i dont think there is a check valve in the tank but you might have a restriction in the fuel line between the tank and pump have you pulled the line off the fitting at the tank? to make sure there isnt a restriction in the tank itself
 
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