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I believe that I have the same problem as already listed for a 751 bobcat. It seems to lose power almost like it is not getting enough fuel.From the back of the machine I can see where the fuel line goes under the engine but it disappears from there. I think it must be under the Hydro static pump but is no where to be seen looking down from the top. I can see the fill hose and vent hose where they enter the fuel tank but I cannot find the fuel line, where it comes out of the tank and goes to the primer bulb. Joe

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The fuel line typically consists of rigid metal pipes, with flexible rubber or plastic hoses running from the pipes to the tank and the fuel pump , and from the pump to the carburettor . The flexibility of the hoses allows some movement between these different components.
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 fuel return hose is a fuel system hose that is found on vehicles equipped with carburetors. It`s primary purpose is to return excess fuel from the carburetor to the fuel pump, however it serves other important functions as well.
The return line opens to the fuel bowl of the carburetor. This return line is separate from the fuel line. A fuel pumping means is connected to the fuel line for passing fuel at a desired rate from the fuel tank through the fuel line to the carburetor.
Fuel flows through a small metal fuel line from the tank to the engine. The flow of fuel to the engine is controlled by a fuel valve located on the fuel line.
Most vehicles have rubber fuel hoses connecting the fuel pipes on the chassis to the fuel pump or carburetor on the engine.
Most vehicles have rubber fuel hoses connecting the fuel pipes on the chassis to the fuel pump or carburetor on the engine.
A fuel rail is high pressure tubing which takes fuel to the injectors in an internal combustion engine. The fuel passes from the fuel rail into the injectors in metal fuel pipes.
Most vehicles have rubber fuel hoses connecting the fuel pipes on the chassis to the fuel pump or carburetor on the engine.
When fuel pressure at the inlet of the flow divider reaches a predetermined value (approximately 8 to 12 percent N1), the dump valve plunger moves to a closed position, allowing fuel to enter the flow divider valve. Fuel then passes through orifices in the flow divider plunger and out to the primary Manifolds.
FUEL SYSTEM OF DIESEL ENGINE

The fuel injection pump supplies fuel under high pressure to the injectors through high pressure pipes. The injectors atomise the fuel and inject it into the combustion chamber of the engine. The fuel injection pump is fed with fuel in abundance.

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The fuel lines have rotted out of the edger gas tank. How do I fix or do I need to replace entire tank with new fuel lines?Since there are no male fuel line connections exiting the fuel tank and just two holes where the lines were, I guess I need to replace the entire tank and get a new one with lines already attached. Thanks.
ANSWER : No you can buy replacement fuel line but you must reconnect the filter in the tank that line goes to the bottom of the carby then out the top of the carby to the inlet on the primer then out of the primer and back to the tank.

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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :

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Poulan te 450 cxl fuel lines need routed correctly two line both in tank one to fuel filter other line?
ANSWER : Other line is just left open like to send gas back from the carb.

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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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Where can I get a fuel line routing diagram? – Husqvarna 28cc Hand Held Blower HVH 125B
ANSWER : Just go from the fuel tank straight to the carb and the primer. The pipes are a set length so you don’t have to worry about threading it all around the blower.. just take the most direct route from the tank to the carb..!

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CRAFTSMAN WEED WACKER WHAT IS PROPER FUEL LINE ROUTING ? Replaced fuel tank and fuel lines now it will not start does someone know the proper routing of lines?
ANSWER :

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Which fuel lines go where on Craftsman hedge trimmer, just replaced fuel lines and forgot where big line goes and small line goes
ANSWER :

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Is there a video showing how to install fuel line into the gas/oil tank?
ANSWER : I probably can explain this to where you won’t need a video.

Remove the old lines noted which is the pickup, which is the return, and the routing. If unfamiliar with line replacement I recommend removing and replacing one line at a time; Also taking pictures if needed helps.
Get a length of tag wire. ( Long enough to pass through the line holes and out the filler opening).
Insert the tag wire through one of the fuel lone holes and out the filler opening.
Cut a taper on the replacement line and insert the tag wire through the tapered section and twist to tie it on the fuel line.
Image of wire/line attachment below.
Now gently pull the new into the tank and out fuel line hole.
The procedure is the same for the other line.
Note: For fuel pickup attach your fuel filter. On return line some have a fitting on the end to prevent it pull out so install the fitting if one is used. Also cut line the line to length adding a little extra for the taper section as needs removing so the line line can be attached.

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