Can't get my '89 Evinrude 110hp to crank. When I turn the key, I can hear a "zzzzzz" sound along with random clicks and snaps. Sounds like a bad connection. Voltage at soleniod was 2.75 volts. Not sure what to test next. Starter is only two years old, and I just replaced the solenoid hoping that was the problem. Battery has a full charge. Ran great last year.