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If you have the vertical exhaust routed very close to the carb, and it bothers you, fabricate a heat shield. Take a look at a semi-truck.. there are various styles that could be easilly copied using a flat section from some scrap roofing tin, or some metal flashing, or even a cut from a section of stove exhaust pipe.. In fact.. walking the isle at a home depot, there will probably be a dozen things you could use. Metal riser tubes for gas water heater exhaust.. metal tube for dryer vent.. etc. Upu could mount it offset from the muffler itself. For brackets, you could cut and form the metal, if sturdy enough.. like roofing tin, to have integral legs that touch the pipe in 3 places at the top and 3 at the bottom.. and then bend those legs over to make a flat tab where they touch the exhaust pipe.. then use band clamps to hold them on. Alternately, radioshack sells antenna mast clamps.. they are a band clamp that has a mast on it that is made to keep a wire 2-3" from the mast. That mast could also be used to offset your heat shield.. probably only need 2 of them.. Guess you could also fashionsoem sort of plate that juts out from the engine and seterates them too... or if you have a welder, or torch. tack a small shield on the muffler itself. The oem clamp has a top and bottom. If you have it tight and the union is loose.. you may have it flipped. If your muffler flange simply doesn't fit good due to the aftermarket design.. or if it is from a different tractor.. take a soda can and cut a strip out around the can.. use that strip as a gasket, and wrap it around the union of the manifold and the muffler.. then clamp the clamp on. It it was real leaky.. might even add some muffler pucky to the soda can strip and clamp it on. Soundguy
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