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| Webbed by Markus Almroth | ||
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Table 2-2. Fire tube dimensions
*A fire tube with an inside diameter of less than. 6 in. would create bridging problems with wood chips and blocks. If the engine is rated at or below 15 borsepower, use a 6-in. minimum fire tube diameter and create a throat restriktion in the bottom of the tube corresponding to the diameter entered in the above table. NOTES: For engines with displacement rated in liters, the conversion factar is 1 liter = 61.02 cubic inches. The horsepower listed above is the SAE net brake horsepower as measured at the rear of the transmission with standard accessories operating. Since the figures vary when a given engine is installed and used for different purposes, such figures are representative rather than exact. The above borsepower ratings are given at the engine's highest operating speed.
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