Just bought this Honda engine model number G400-1393887 that has been sat for a long time got the engine to turn over but wouldn't start. Had no compression.
Took off the head and noticed the inlet valve is stuck open? How do I fix this?
What great answer , it sorted my g400 generator problem
Dave, December 2011
some mowers allow one of the valves to remain open to shut it off quick and to stop overrun in an emergency hope this is helpful
alan, January 2009
Let it soak in paraffin (around valve guide) for a few days, then carefully tap the valve free, working it up and down with a little paraffin, NOTE: don't hit it too hard...! when it is free apply a little oil to the valve guide.