Hi, I,ve changed the petrol to fresh tankful.Checked the spark which seems quite healthy.Petrol getting through to plug and top of piston.Cleaned air filter.Checked compression,which is about 50psi.but engine still will not start.Is comp high enough?? Do I just fit new barrel and piston??

nottmoby2, August 2009

did you clean the carb out be 4 puting in new petro as it will mix with the old petrol in the carb and try putining a bit of new petrol down the spark pulg hole and put spark plug back in and try to see if it will run then

ian, August 2009