Surprise! On my first startup of the season I have this problem. 1994 Speedster. Port engine started no problem. Starboard engine starter motor keeps running even when I pull safety lanyard and turn off key. I was scrambling to unhook batteries! I am thinking either faulty solenoid or sticking starter clutch. Wondering if anyone has experienced this? I was surprised the starter had power with key off and safety lanyard switch off...