Thanks again Rusty,
You were spot on with where the problem was. I sprayed a little CRC Carburettor cleaner on the outside of the throttle shaft, and it loosened up straight away. Gave it a little more and could move it easily with my finger and the return spring worked moving it back into place. Half a pull and the mower started but was not very responsive to the accelerator, it was just a matter of adjusting the throttle cable and it seems to run perfectly. Just need to have a week of sunshine so the grass will grow and I can try it out. Then all being well I think I will try and sell my new Victa, which never starts with less then 10 pulls and keep this one. I only have about 60 square metres of lawn so should last me the rest of my life.
Thanks again for your help