Hi All
Great feedback many thanks.
The engine was running OK previously. It had an overheating problem. The heat exchanger pumped out water when the engine got hot. I guessed the head gasket. I changed the head gasket, restarted successfully after two attempts. I only had fresh water cooling so two more starts to prove ok i shutdown to start work on the boat. I then started my repaint program. Anti foul etc. When ready to put into the water I tried the engine to be sure before launching and she would not start. 2 months ago many looking at my problem no success. When i took the pulley cover plate off it was then I noticed the 180 difference. How on earth is this possible.