I have a Yanmar 4JH2-E and just recently I have experienced a problem when I start the engine. I hear a clicking sound from the engine room, but no start. It will start though after a couple of attempts. Other times it fires up beautifully. Any ideas where to begin figuring this out? Do you think I need a new starter? The batteries and connections look fine, although I did not take them off to examine them. Your thoughts are appreciated!