Hi I cant thank you enough, you have solved my problem. It was driving me crazy. It was that the plug gap was to small.
I had put a new spark plug resistor type, Champion RC12YC in, and the B&S spec was 0.020, which I set it at, which gave me the problem.
I changed it to the Champion recomended gap of 0.030, and it fired up first pull.
Who would have thought that 10 thou would have made such a difference !!
Thanks again
Best Regards grover