Give the float the "shake test" to feel for gas inside one of the pontoons. If there is, replace the float
Before putting the top on the bowl, turn the top upside down with the float resting on the needle valve. Suck on the fuel inlet fitting and hold your tongue over the hole. It should hold vacuum. If it won't, something is wrong, the needle valve is not sealing, the seat is not sealing against the gasket, the float is binding...
Watch carefully as the bowl is lowered onto the top. Be sure the float isn't touching anywhere. Do the "suck test" again.
Is the fuel clean and filter screens in place in the inlet elbow and the sediment bowl? You can take a fuel sample in a clean glass, see if there is anything coming down the line, like rust or dirt. It only takes a tiny speck to hold the needle valve open. I like to flush the line before making the final connection, especially if the area around the carb is dirty and difficult to get to. You can even let some gas trickle as you make the connection.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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