I recently bought a Fiberglass Tri-hull Larson boat with a trailer and a Merc 800 outboard motor for $350. The engine was recently rebuilt and near each spark plug there are compression numbers. They are 1 120, 2 120, 3 125, 4 120, 5 130, 6 130. Are these numbers typical or are they above average? Also I need to know the year of engine. The S/N is 1401605A and the model is Merc800 model E. Was the purchase a good deal? The engine runs and sounds great. It is an 80 hp Merc.
