Thank you vccomm for your quick reply.
The new gasket between the carbie and air box didn't help, although I was hopeful it would. It is still hard to start, but at least it stopped the fuel flowing out of the primer button hole.
Neither did replacing the worn out o-ring on the intake port/tube or replacing the sheer pin on the magneto/flywheel, which I thought was the cause of the "Hard to start" issue. In my mind, the sheer pin replacement should have worked with regard to affect on spark timing.
The primer pumps fuel through the carbie and into the intake area, but I originally noticed that excessive fuel pumps on the primer returned fuel through the carbie to the air filter area if used to excess.
The main jets, along with every other orifice I had located, have been cleaned with Carbie Cleaner (again today) with no real effect to overall issue, and all holes in the main jet (nut) are clear.
There are no fuel leaks from either the bowl or nut area, which indicates a good seal for both.
Air gap on the coil was reset using a business card, which I normally use a pair of feeler gauges at 0.010" to complete.
I haven't tried to balance the single bar blade as yet as main issue is that the mower is hard to start. It gives an initial cough and splutter, like it wants to start, but fails to fully fire, unless helped using Nulons "Start you bastard", which has got me wondering why.
Appreciate your help.
Thank you.
Daryl
