Hello All:
My 5239 mower surges or hunts during use. It starts on the first pull but acts as if it is starving for fuel. Adjusting the needle makes no difference as I can turn the needle until it hits the bottom of the engine and no change! I just rebuilt the carb so it is very clean. The surging is why I rebuilt the carb!
Should I open the main jet by drilling it to a larger diameter? If so, how much? If this is not the fix, what else should I consider? The fuel is 16-1 and is fresh. Could fuel with excessive oil cause this problem? It really produces a large amount of smoke!
Perhaps it is not a fuel problem. Perhaps the governor is sticking or is loose or...
Suggestions and or comments?
Stay well,
Franchi
My 5239 mower surges or hunts during use. It starts on the first pull but acts as if it is starving for fuel. Adjusting the needle makes no difference as I can turn the needle until it hits the bottom of the engine and no change! I just rebuilt the carb so it is very clean. The surging is why I rebuilt the carb!
Should I open the main jet by drilling it to a larger diameter? If so, how much? If this is not the fix, what else should I consider? The fuel is 16-1 and is fresh. Could fuel with excessive oil cause this problem? It really produces a large amount of smoke!
Perhaps it is not a fuel problem. Perhaps the governor is sticking or is loose or...
Suggestions and or comments?
Stay well,
Franchi