I had 5HP B&S on a plastic pump, pumping liquid nitrogen fertilizer. The seal went, and when the engine quit, I discovered it was because the fert. had pushed through both seals and filled the crankcase with sludge. The most I took off the engine, if I recall correctly, was the little valve spring cover. Otherwise I flushed and cleaned. At some point, it didn't want to turn over, and felt like it was grinding. But I persevered, and eventually got it going again. That was years ago. I still use it. If you're going to mess with it. You might want to over fill the crankcase at first to get lots of lube up around the crank/rod area.
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Today's Featured Article - The 9N Lives Again - by Tyler Neff. I often reminisce about the good old days of my youth when I visited my grandparents on their farm in Moorefield, West Virginia. I lived in Middletown, Maryland, which was about two and a half hrs away from the farm. During my summer vacations I would spend two weeks helping granddad Wilmer with his farming duties. Wilmer and his brother Weldon owned the �Neff� farm. Th
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