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Dual Tanks

If there isn’t enough room between the firewall and the instrument panel for a 16-ounce fuel tank, use silicone sealant to glue a 12-ounce tank and a 4-ounce tank side by side. Plumb the tanks as shown. As the fuel level of the fuel in the larger tank falls, fuel will be drawn out of the smaller tank. Note that the smaller tank’s vent is level with the top of the larger tank to prevent...
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