I have a 2004 Yamaha four stroke 225 that i recently started having a problem starting. I would turn the key and it will just click once. I thought I may have had a bad connection so I cleaned the connections from the motor to the cut off switch and then to the battery. That still has not fixed the problem. I pulled both batteries out and had them tested and they still seem to be strong. I hooked a jump box to the battery and It finally turned over. I did not have the problem again for two weeks and it started again yesterday. Turn the key and 1 click. Tested battery again and they had a full charge but I decided to jump again and after a minute it started up. Any ideas on what may be causing this? It leads me to believe it is the starter relay or the started. And help would be greatly appreciated.