Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hi, my name is***** will be assisting you.
Can you explain to me what the problem is? Does the machine start? Have you checked the fuel lines for cracks or breaks inside the fuel tank?
Does it die instantly or only when you try to operate the throttle?
And you had this same problem prior to installing the kit in the carburetor?
There are adjusting screws on the carburetor marked H and L on the body of the carburetor beside the screws. You can turn the H screw out about and 1/8 of a turn and see if that fixes the problem.
The caps can be removed with a small screwdriver and just catch under the bottom edge of the cap and pry it off then you can make your adjustment and put the caps back on. The caps are called limiter caps and they basically just keep you from turning the screws per EPA restrictions.
It sounds like you just aren't getting enough fuel through the carburetor to keep it running. When you replaced the diaphragms did you clean the carburetor thoroughly while you had it apart? Are you comfortable in the idea that you have the diaphragms installed correctly? It sounds like you at least have the pump diaphragm correct or chances are the machine would not even attempt to start.