OK, for the umpteenth time...........did ya cleen the spark screen in the muffler.......how about the exh. port in the cyl.????
Your carb ,# 4140 120 0619 B can be had on Ebay for like 25-35 dollars here in USA. Not sure about shipping to U.K. Don't you have an Ebay in the U.K ??
" But let me tell you something ,folks: You can't fix stupid! There's not a pill you can take, there's not a class you can go to. Stupid is forever!"