I have a Craftsman 917.370410 self-propellied lawn mower. My question may seem similar to My push lawn mower will start when primed, then it dies unless I tip it backwards, however it may be slightly different.
When I start my lawn mower it will quickly die within 1 second now as long as it stays flat on the ground. This interval seems shorter with each start. If I tilt it back towards me, then the lawn mower will stay running for longer, however even then not at full power, it just delays the inevitable of it shutting off.
I have cleaned the air filter, replaced the spark plug and tried my best to clean the carburetor with the spray, however none of that seemed to make a difference either for the better or for the worse.
Are there any more easy fixes that I can try? One note is that while I was able to get the cover to the carburetor off with a socket wrench, the air filter base will not budge to more fully expose the carburetor because it has 3 bolts which look exactly like the same bolt for the carburetor cover, but they won't budge with my socket wrench.