Holley Marine Carburetors & Parts

Marine Fuel Line

734-4.jpg
734-4.jpg

Marine Fuel Line

62.00

Marine Fuel Line Chrome For Holley Model 4150 Marine Carburetor 5/8-18 inverted flare inlet. 9.313" center to center.

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INSTALLATION INSTRUCTIONS

WARNING! To preserve the warranty, the instructions must be read and followed thoroughly and completely before and during installation. This Holley fuel line is designed for use on Holley dual feed carburetors. IMPORTANT! To prevent damage to the finish of the fuel line, always tighten the fittings using a 5/8” flared nut wrench. This will also prevent “rounding” of the hex heads. 1. Before installing the fuel line, inspect the fittings to ensure that they are free of any metal chips or burrs left over from the machining process. Clean, if necessary. Otherwise, cross-threading and fuel leaks will result. 2. When all fuel inlet fitting threads are free of any contaminants, you may now install the fuel line to the carburetor. It is highly recommended to initially start the threads by hand, at least 2-3 complete turns. Finish tightening with a 5/8” flared nut wrench. 3. Tighten the fuel line sufficiently to prevent fuel leakage, but not so tight that distortion or stripping will result. NOTE: Your new fuel line is equipped with a 1/8” NPT pressure tap (734-4 DOES NOT INCLUDE 1/8” TAP). The plug is lightly screwed in for shipping purposes. During installation, the plug must be removed, coated with PTFE sealant, and reinstalled if the port will not be used for a pressure gauge. If you wish to add a fuel pressure gauge, remove the plug and install a gauge with a 1/8” NPT stem. ONLY USE PTFE SEALANT ON NPT FITTINGS. IMPORTANT! Holley does not recommend the use of PTFE tape on the carburetor inlet fittings. The tape could separate in the inlet fitting and clog the inlet fuel filters, resulting in fuel starvation. If the fuel inlet filters were removed, or never installed, PTFE tape particles could become lodged in the inlet needle and seat assembly and cause flooding and the possibility of a fire. 4. Start the engine and check to ensure against fuel leakage. Correct, as necessary. 199R9827 Revision Date: 1-22-14 FUEL LINES INSTALLATION INSTRUCTIONS P/N 34-150, 34-160, & 734-4 WARNING! To preserve the warranty, the instructions must be read and followed thoroughly and completely before and during installation. This Holley fuel line is designed for use on Holley dual feed carburetors. IMPORTANT! To prevent damage to the finish of the fuel line, always tighten the fittings using a 5/8” flared nut wrench. This will also prevent “rounding” of the hex heads. 1. Before installing the fuel line, inspect the fittings to ensure that they are free of any metal chips or burrs left over from the machining process. Clean, if necessary. Otherwise, cross-threading and fuel leaks will result. 2. When all fuel inlet fitting threads are free of any contaminants, you may now install the fuel line to the carburetor. It is highly recommended to initially start the threads by hand, at least 2-3 complete turns. Finish tightening with a 5/8” flared nut wrench. 3. Tighten the fuel line sufficiently to prevent fuel leakage, but not so tight that distortion or stripping will result. NOTE: Your new fuel line is equipped with a 1/8” NPT pressure tap (734-4 DOES NOT INCLUDE 1/8” TAP). The plug is lightly screwed in for shipping purposes. During installation, the plug must be removed, coated with PTFE sealant, and reinstalled if the port will not be used for a pressure gauge. If you wish to add a fuel pressure gauge, remove the plug and install a gauge with a 1/8” NPT stem. ONLY USE PTFE SEALANT ON NPT FITTINGS. IMPORTANT! Holley does not recommend the use of PTFE tape on the carburetor inlet fittings. The tape could separate in the inlet fitting and clog the inlet fuel filters, resulting in fuel starvation. If the fuel inlet filters were removed, or never installed, PTFE tape particles could become lodged in the inlet needle and seat assembly and cause flooding and the possibility of a fire. 4. Start the engine and check to ensure against fuel leakage. Correct, as necessary. 199R9827 Revision Date: 1-22-14