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Fuel lines are generally fixed by replacement of the fuel line because the rubber it is made of deteriorates from age and alcohol contained in gas. Before you begin, make a mental note or take a picture of how the fuel line runs from the tank to the carburetor so you will be able to put the replacement in the same position. On most chainsaws you need to take some wire, make a u-shaped end, which will be used to grab the fuel filter in the fuel tank. Drain the fuel in the tank. Disconnect the fuel line from the carburetor. Generally there are two lines on the carburetor, one for fuel, the other line creates suction used to pump fuel and is connected to the motor, not the fuel tank . Just disconnect the fuel line, it is usually on the side of the carburetor and will leak gas when disconnected. Once this is done, using the wire, gently grab and pull the filter towards the filler opening and using needle nose pliers grab the fuel line above the filter and pull. The problem you may have, is if the fuel line is in bad shape it will break, But once you have the filter off the fuel line, the fuel line can be pulled out from either the inside of the tank or from where it comes out of the tank and goes to the carburetor. Once it is removed you are ready to put the new fuel line in. It is best to put the fuel filter on the fuel line next. It easier than trying to put it on inside of fuel tank going out. Spray some WD40 or equivalent, on the outside of the gas line, to help the line squeeze through the whole in the back of the tank, which it will have the go through. From the outside of the tank, where the fuel line comes out, fish some wire inside the tank and put the fuel line on the end of it, making sure not to pierce or damage the fuel line. If needed a piece of black tape will hold the wire better and help fit the line through outside hole. Once the fuel line is on the wire, pull it through carefully out the other side of the tank. It is best to use your fingers to pull the line through the outside hole, it makes it less likely the line will get torn or overstretched as line goes through the hole because of the extra rubber used on the line to seal the tank from inside and outside. Once the line is pulled through and seated, run the other end to the carburetor and you are done.

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Fuel line. 15 Inches of of 1/4 inch inside diameter hose.
Most vehicles have rubber fuel hoses connecting the fuel pipes on the chassis to the fuel pump or carburetor on the engine. Rubber hoses are flexible and can be cut to length as required, but they have a tendency to perish over time and can rub through if not properly secured.
The fuel rail is the last distribution point in the fuel system before fuel is sent to the injector. In return-type systems, each fuel rail is connected directly to the injectors that it feeds and relies on a fuel pressure regulator to relieve excess fuel pressure.
The (clear) main fuel line with the filter (filter inside the fuel tank) goes to the bottom of the carburetor (or the elbow shaped nipple). The (clear) fuel intake line runs from the top of the carburetor (straight nipple) and goes to the short post on the back of the primer bulb.
A typical fuel system

A single fuel pipe runs from the tank, under the floor of the car to a mechanical pump on the engine. The pump delivers fuel to the carburettor. Whenever you check fuel pipes, disconnect the battery to prevent stray sparks igniting petrol or petrol vapour.

The (clear) main fuel line with the filter (filter inside the fuel tank) goes to the bottom of the carburetor (or the elbow shaped nipple). The (clear) fuel intake line runs from the top of the carburetor (straight nipple) and goes to the short post on the back of the primer bulb.

Discover Relevant Questions and Answers for Your Specific Issue

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Why do my car want take the gas when I start the car
ANSWER : Make and model, engine size please.

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I need a schematic to replace gas lines – Craftsman 25cc Gas Line Trimmer
ANSWER : Enter your model # at Sears’ website at partsdirect.com and you should be able to find your schematic.

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Try to replace 2 gas lines that from the craftsman gas line trimmer, but forgot how to put them back…any manual availabel?
ANSWER : Can you show me a diagram?

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Need to replace fuel lines….does the prime bulb connected to return fuel line or the supply fuel line
ANSWER : Hi stglass900…

Normally the big line will be the line the fuel filter is connected to inside of the tank, and is connected to the primer bulb.
The smaller of the two lines is the return line to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
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The head won,t turn – Craftsman 25cc Gas Line Trimmer
ANSWER : You will need to pull the head off, as it sounds like the cable is off. there should be four bolts/screws, there maybe some in the middle also, gently remove the head(this is the top of the trimmer where the pull cord is, once you have it separated you can turn the cable by hand and the line feeder should rotate, if it does then look inside the head and make sure it is still square and not rounded. or you can pull the line feeder off and pull the cord and see if the cable rotates, whichever you feel comfortable with trying. Good Luck Tim

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Illistration for installation of new gas line?
ANSWER : What model trimmer do you have?

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Need gas line routs for a craftsman weed eater
ANSWER : The longer, (and sometimes smaller of the two), fuel line goes from the carburetor to the tank with the fuel filter attached to the end, inside the gas tank.The other line, ( sometimes larger), goes from the primer bulb to just inside the gas tank, about a 1/2 -1 inch inside with coupling attached to the end. Coupling keeps line from pulling out of tank.Jim

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Fuel line diagram for craftsman gas blower – Craftsman 25cc Gas Line Trimmer
ANSWER :

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