Dear all,
My sister's 2 stroke has developed a habit of over revving and then under revving after it has been running for about 10 mins. During this time, there is nothing you can do to control it, the start lever has no control and the revs are very loud. Only way to stop it is to turn the petrol off. Lawn mower has been a bit difficult to start lately as well. Any ideas what is causing the overrevving?
