For sale Webb petrol lawnmower, it stop working and I took plug out which was covered in soot and cleaned it and worked perfectly again for a while, I kept doing this and each time I did it it worked again but shorter periods of time until it would not start. I was going to fix it as I was told the carburettor may need cleaning or replacing. It's had a new spark plug new cutting blade last year and always well maintained. Over the four-year period that I had it. This must be collected from Ruislip in Middlesex, HA4 postcode area.