I have a 100HP 1991 Mariner outboard. My buddy has a 1991 Mariner 115HP outboard. We have checked out every inch of both motors the book has them as sister engines same sections same build-up. So here is the stupid question! Where does the extra 15 ponies come from, bore and stroke? :confused:
Gent's I need your help!!! I have 100HP 1991 4 cylinder Mariner that does not pee. I have pulled out the thermostat and replaced the impeller and still no pee. I even pulled out the pop-it valve and ran it with out it. Still no pee. The motor runs cool on the muffs and idles all day without...
