Your problem is the fact that the carby is a bitsa. The The parts from the G4 and LM are not interchangeable. The only interchangeable parts are the primer face.
The poppet valve must be set to "C" facing the fuel inlet hole. The "seat" of the valve has 3 distinct steps around the perimeter of it. The different heights determine how much its going to rev. The only domestic machine that doesn't use setting C is the vortex as it has a bigger heavier blade carrier and hence need to rev less.
Are the 2 governor springs in the right place? The longer one goes in last between the diaphragm and the end cap. It also might be too light, and not pushing the valve open enough.
Last edited by bigted; 24/07/15 12:34 PM.
