I have a 3.0 Litre mercruiser I/O and have had some recent problems with the starter. I tested my battery and it wasn't holding charge well, so I replaced it. With new, fully charged battery, I went to start it the other day and just got clicks, without the engine even starting to turn over. I checked all of my connections and they were good and there weren't any corroded or faulty wires. I believe that the starter is going bad, as we were able to tap the starter with a wrench and it started right up. After that, it started fine the rest of the day. What I'm asking is there a special "marine" starter that I need to purchase and if so, what brand, type, etc. do you recommend?