This could be useful for those running a chinese 63cc 850w generator. I bought one about 6 year's ago from b&q for £39, and it's had some heavy use running power tools such as angle grinders. Lately it's been a pig to start, but once running you can't argue with it. So i took the barrel off to give it a de-coke. It didn't need it, but i noticed a recess in the cylinder head near to the spark plug. I decided to fill this with epoxy steel & BANG she fired up better and ran the grinder stronger. Next up a romeu or nikon pipe and a stage 1 barrel tune Oh er i didn't take any pictures at the time, but will try to add one off the internet.