I run a precise mixture of 25:1, always turn tap of after use, run it and starts on full with only half a pull. Revs i believe are ok, just cant work out y its fouling, im guessing its got the wrong main jet or the cylinder is to scored.
I cleaned out the whole carby today n ensured it was set on C.

I heard there are bigger jets n smaller jets, showed mower shop n they rekon mine has the largest hole of the jets??