Ok, thanks "dingbat". I bought the systems check tach after finding a Johnson/Evinrude chart that strongly suggested it for my '89 motor. It'd be a lot simpler if I don't need it though. All I'd have to do is sell the tach I got and go pick up another one.
Hello everyone! I'm such a newbie to boating! I bought an old POS pontoon boat and completely rebuilt the deck, furniture, and helm. It came with a Mercury mounted on it in addition to an '89 Evinrude 90 (E90TLCEM). I installed the Evinrude shortly after getting the boat. The Evinrude came...
