Thanks Max, If I pull the carby down I would give evrything a good clean so that should fix it. I always give the tube a good clean with carby cleaner. I was trying to avoid it because I couldn't be bothered
Hi Lawncutter , yes Norm is right if you have the gx120 engine already then buying the clutch with a 3/4 hole would be the easiest solution , but if you first need to buy an engine get one with the 20mm 5/8 shaft like Loncin or Lifan or Honda etc.