Grunt, fuel economy and a generous warranty
Reviewed Oct 2016
Over the years, subtle changes have been made to the running quality of the Mercury 15hp Super. The first engine I reviewed was rough as guts below 2000rpm, which gave my arm flab a real massage. But the most recent model smoothed out above 1000rpm, though I still wouldn’t recommend extended trolling unless you really want to get the blood flowing in your tiller arm.
Despite the engines running on 25:1, smoke appeared only below 2000rpm. They started easily with a firm two-hand pull when cold and with their effective thermostats quickly reached normal operating temperature. When hot, only one hand was needed to fire them up...