I have a Mercury 4 stroke 90 HP outboard motor on a pontoon boat. Over the past year or so, I've had a problem with the boat periodically not starting. During these incidents, I turn the key & get the warning beep & guage activation, but no cranking - just silence. This happens about 1 in every 15 times, and sometimes occurs in clusters (or several times during repeated attempts to start the boat). The occurrence seems to be random, but may occur a bit more frequently when starting after the boat has been running for several minutes. I have a new battery with clean, tight cable connections. Any ideas?
