How to Identify and Fix Common Gardening Problems ?

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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. The return line (blue) comes from the long post on the back of the primer bulb and goes into the bottom of the fuel tank.
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.
The return line should direct fuel close to the bottom of the tank and away from the pickup.
Most vehicles have rubber fuel hoses connecting the fuel pipes on the chassis to the fuel pump or carburetor on the engine.
Fuel lines are made of durable metal, plastic materials and though they are located in the undercarriage of the vehicle, and seemingly in a vulnerable position, they are placed in areas that cannot be damaged due to elements, road conditions, or exposure to heat from the engine`s exhaust or other components.
Many of today`s chainsaws will come with felling marks. Similar to the sight on a gun, these lines will help the operator align the cut with the direction the tree will be felled.
Prime the fuel system by turning the ignition on (Run position) for 30 seconds, but do not start the engine. This allows the pump to prime the system. Turn the ignition off, and then crank it for 15 seconds. If it does not start, repeat the first task and this one until it starts (cycle the key).

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Replaceing fuel line in polan 3300 chain saw – Poulan Pro 42CC 2 Cycle Chainsaw, 18"
ANSWER : Hi owjbhend…
Use a piece of wire and insert it into the fuel line, then bend a hook in the end and hook it over the end of the fuel line…lubricate the fuel line with some vaseoline very lightly…about the first one inch of the fuel line and then use your fingers to start the fuel line into the tank, once you have the fuel line in the tank give enough to hook the fuel filter to and so it can be dropped back into the tank.
Below is a drawing of how to route the fuel lines.
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The saw starts up fine, runs fine but not for long. it runs for about 1 minute and dies. like it is out of fuel or sucking air, i noticed there is no filter on the suction line and there is another nipple entering the fuel tank which appears to need a hose on it , is this just a return line, or should the long line in side the tank press on to this nipple? thanks,
ANSWER : I’ve had my pp4218 for about 2 years and the fuel lines have rotted. I’m thinging from ethanol in the gas. However, I’m replacing them and cannot tell which lines go where. Does the large line from the bubble go to the filter and the little line return?

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How to replace the fuel primer bulb and fuel lines in McCulloch 3516 chainsaw?

the fuel primer bulb broke and the plastic lines have crumbled. i need to know how to run the lines from the fuel tank to primer bulb to carurator.


ANSWER : I just did a primer bulb not too long ago, but I don’t remember what equipment it was on. They are generally easy to replace. First, remove anything that is retaining the bulb assembly, such as cover plate. On my Homelite chainsaw, I simply pried it out with a small screwdriver.
The replacement part itself has two barbed stubs that the two fuel line hoses push onto.
Make sure that you keep the fuel line tubes above the fuel level at all times to prevent leakage.

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Routing of fuel lines from tank to primer bulb to carb
ANSWER : Line with filter goes to carb inlet,
Line from carb goes to inlet side of bulb.
Line from bulb goes to tank

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Chain saw, there is a line from primer to the carb, then what? I cant tell if coming out of the carb it goes back to primer or in the fuel tank? Then should there be a line from fuel tank to the primer?
ANSWER : Similar to this, typical fuel system.

Fuel Line Replacement by

The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
If the saw is equipped with a primer bulb, an output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill as it inflates).
The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs to help with reassembly. HTH

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Need diagram for fuel line in tank fuel filter
ANSWER : The small diameter fuel line that has the fuel filter in the tank on it goes directly to the carburetor (with the built-in primer or externally mounted primer). IF the carb has the external primer, the small line goes to the nipple on the carburetor opposite the end with the hole in the cover. If it has the built-in primer on it, it goes to the carb body on the nipple furthest from the bulb. The large diameter line is the fuel return line and if the carb has the bulb on it, this line connects on the nipple closest to primer bulb.. With the externally mounted primer, this line connects on the longest nipple coming out of the primer and goes to the fuel tank (not the filter though). There is a nylon connector inside the tank that holds this larger line in place. The shorter nipple on primer bulb has a smaller diameter fuel line connected to it and connects to the nipple on the carb closest to the end with the hole in the cover. Built in primer has 2 fuel lines…externally mounted has 3.

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How fuel lines hook up to primer ball – Troy Bilt Tb70ss Gas Trimmer
ANSWER : The supply line coming from the stone filter goes to the short nipple on the prime bulb and the line out from the long nipple on the priming bulb goes to the fuel nipple on the carb that is the closest to the muffler. The return nipple is the closest to the choke and it goes back to the hole in the tank that is the higest. I hope that helps.

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Need fuel diagram – Stihl Fs36 Line Trimmer Gas Tank
ANSWER : Http://

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