I have a 20 hp intec with 400 hrs. I had to adjust the valves once, no carb problems. Popping in the exhaust is common. Try leaving engine running at full speed before you turn it off. That seems to work better for me, eliminates dieseling and popping. When you turn key off, you kill the spark and unburned gas is inside the muffler. Popping isn't a sign you are running rich.
Check air filter, Check valve clearance Replace spark plugs Replace fuel filter I purchased a blown kohler engine off a cub cadet. There was only 300 hrs on engine. The cooling fins were 100% choked with dirt and grass. Engine overheating could be the cause of our problem.
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Today's Featured Article - Show Coverage: Central Illinois Strawberry Festival - by Cindy Ladage and Janna Seiz. Every year the coming of summer is highlighted by different events for different people. For some, it is heralded with the end of school, tilling the garden, or completion of the planting season. To us, connoisseurs of find food, antique tractors, farm toys, crafts, and downright fun, the annual Strawberry Festival means summer is here. Every year, in Carlinville, Illinois, the Macoupin County Historical Society and the Macoupin Agricultural Antique Association team up to fill th
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