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Can you install new fuel filter and fuel line in tank and also new lines to primer bulb and to carburetor.

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6ya6ya
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Posted on Jan 02, 2017

moretons
  • 155 Answers

SOURCE: LOOKING FOR INFORMATION ON FUEL LINE ROUTING

most trimmer fuel lines run from line in tank with pick up filter to bottom of carby then out of top of carby to inlet on primer usually the smaller tube then out of the longer tube on the primer and back to the tank.

Posted on Jul 25, 2009

dontbother10
  • 2220 Answers

SOURCE: I have a McCulloch 3200 chainsaw on which I

From the fuel tank to the carb, from the carb to the primer, from the primer back to the fuel tank. The bulb sucks fuel through the carb excess fuel is returned to the tank. HTH
Lou

Posted on Oct 08, 2009

dontbother10
  • 2220 Answers

SOURCE: Fuel line goes into tank bottom line has filter

Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0

  • 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.
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The line with the filter needs to be long enough to reach all parts of the tank as the saw is moved, a little to long is probably better than to short. The line returning from the primer is not critical so long as it cannot fall out (mid tank). All the primer line does is return excess fuel to the tank. Does this answer your question?
HTH
Lou

Posted on Dec 08, 2009

panilling9
  • 284 Answers

SOURCE: Which fuel line "port/inlet" on the Walbro wt-380

Usually the line with the filter on it that comes from the tank goes to carb. inlet first which is most likely close to the bottom side of the carb.nearest to the engine,then the outlet or return line on the carb.goes to the inlet side of the primer and the outlet side of the primer goes back to the tank. The primer draws fuel through the carb to the primer to the tank if its not? then correct the line connections until it does

Posted on Jun 25, 2010

rycgl
  • 1545 Answers

SOURCE: engine will start and die immediately what is the

If this unit has a Zama carb (or even if it's a Walbro) this will help you alot: http://www.zamacarb.com/tipspage.html

Posted on Aug 29, 2010

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1 Answer

Both my Echo line trimmer and Stihl hand held blower. No fuel in the bulb on both, I suspect bad fuel. If so, how do I fix?


Check INSIDE the fuel tank. It is possible the fuel line inside the tank has deteriorated and the filter broke off. That would cause fuel line to FLOAT in the tank instead of lie on the bottom. This could easily be the cause of no fuel in primer/purge bulb. You probably need to:

Install new fuel filter..........Install new fuel Lines.......Install new primer bulb........Clean carburetor.

So in some respects, you are probably correct....no fuel filter equals bad fuel entering carb (but if none in bulb, doubtful much fuel (dried up maybe ) in carb.

Sep 06, 2011 | Husqvarna 28cc Gas Line Trimmer

2 Answers

My chain saw 14" homelite


primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.

Jan 27, 2011 | Garden

1 Answer

All of the fuel lines have broken due to age and now I do not have a good idea how to replace with new lines


In general, a fuel line runs from the fuel filter in the tank (check the filter for plugging) up to the carburetor inlet port (usually upper-most). The lower carburetor port goes to the inlet of the primer pump. Leave the other primer port open for the moment. With fresh fuel mix in the tank, try to pump fuel into the primer bulb--if nothing happens, move the line to the open port and see if it will pump. If neither one works, the filter is plugged, the carburetor is internally plugged, or the primer bulb is cracked or has a hole in it. Be sure to use original type fuel lines--not plastic. Once you have the primer bulb filling with fuel, install a fuel return line from the open primer port back into the tank through another hole. The engine should be ready to start at this point. Hope this helps!

Dec 28, 2010 | Garden

1 Answer

I changed the fuel lines and replaced the primer bulb, but I cant remember witch way the fuel lines go from the tank to the bulb and from the bulb to the tank. Your help would be greatly appreciated. Thank...


The longest, and sometimes smaller in diameter of the two Fuel Lines, goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter. Then pull the Fuel Line back through the hole. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.

The other Fuel Line goes from the primer bulb to just inside the tank,(about a 1/2 inch). (Make sure that you get the right size fuel lines.) The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank.

(HINT): When feeding the Fuel Lines through the fuel tank holes, cut the lines at an angle. They will feed much easier into the holes. You can than cut them off square, once you know that you have enough to work with.

Three Fuel Line Installation: In this installation, the primer bulb is separate from the Carburetor.

The (1st) Fuel Line will be the longest, and sometimes smaller in diameter of the (3) Fuel Lines. It goes from the bottom of the carburetor, to the bottom of the tank. (The first line will need to be longer so that you can pull it all the way through to where you put gas in.) This so that you can easily attach the fuel filter. Then pull the Fuel Line back through the hole. Leave enough slack in this line so that the filter that attaches to the end will rest comfortably at the bottom of the tank. Cut off any excess line once you know that you have enough to reach the carburetor.

The (2nd) Fuel Line goes from the top stem of the primer bulb to just inside the tank,(about a 1/2 inch). (Make sure that you get the right size fuel lines.) The plastic coupling goes on the end of this line, inside the tank. This keeps the line from pulling out of the tank. This will be the shortest of the three Fuel Lines.

The (3rd) Fuel Line goes from the bottom stem of the primer bulb to the top of carburetor

Nov 06, 2010 | Garden

1 Answer

I need a diagram to see how to replace the fuel lines on a Poulan Mod 1950 Chain Saw. I have a large hole in the right top side of the tank with a large tube going from the filter, and small hole on the...


The large hole in the tank brings a line from the filter to the upper carburetor fitting. The lower carburetor fitting goes to the primer inlet (which is found by plug and try). The short line from the tank goes to the outlet of the primer. With fuel mix in the tank, try one of the ports in the primer with the line from the carburetor. If correct, the primer bulb will fill with fuel--otherwise, try the other primer port and see if fuel will come into the bulb. This may take over 6 pumps if the carburetor is empty of fuel. Did you check the fuel filter for plugging? If it was ok, and with new lines, fuel should pump into the primer provided the carburetor is not plugged itself. If the problem seems to center on the carburetor, be sure to check the diaphragm in the lower chamber for flexibility--no holes or cracks. Also, there is a very small filter screen in the mid-body section that may be plugged. Use spray carburetor cleaner to clean the carburetor inside and out. When you get fuel to come into the bulb, the short line from the tank goes to the empty port. Hope some of this helps!

Jul 21, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Poulan P3400 Chainsaw Fuel Line Routing


If the saw has a primer bulb, then you require one line from it's output out to the tank return. Another line runs from the carburetor outlet to the primer inlet. Make sure that you use original rubber lines, not plastic replacements. The primer ports are found by trial and error--hook the filtered line directly to one primer port and leave the other port open. If the bulb is in good condition, and correctly connected to fuel, the bulb should fill with fuel after several pumps. If nothing, reverse the port connection at the primer--and pump test again. One of these two connections should allow pumping to occur. When you get pumping, install the tank return line to the empty primer port. Remove the filtered line from the primer and install on the carburetor. A new piece of line runs from the now empty primer port and connects to the output port on the carburetor. If the carburetor lines are correct, you should be able to pump fuel through the carburetor body and out to the primer bulb. If nothing happens, you may need to swap the carburetor lines, and you will likely need to service the carburetor. Hope this helps!

May 25, 2010 | Garden

1 Answer

Fuel lines from primer bulb


Finding the correct ports on the primer pump are trial and error. Remove the main fuel line from carburetor and place it on one port on the primer (the other port should be left open). Pump it--if correct connection, it should pump fuel from the tank into the bulb. If nothing, place the line on the other primer port and repeat the pumping. One of these two connections should draw fuel from the tank. Install the line that goes to the tank (but no filter inside) on the empty primer port and remove the main line from the primer and connect it back on the carburetor. There is a lower side port on the carburetor that should go to the just-vacated port on the primer. Operate the primer again and it should pull fuel from the fuel filter into the carburetor, through it, and back out to the primer port, then back into the tank. Hope this helps!

May 23, 2010 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Poulan 2150 gas chain saw. How do I connect new primer bulb to carb and gas tank?


Make sure the tank is filled with fresh fuel mix.Try hooking the line that goes to the tank to one of the two primer ports and operate the bulb. If it does not pull fuel in, reverse the connection to the primer and try the bulb again. Once you get fuel into the bulb, move the tank line to the other port. Install a line from the open port on the primer to the open port on the carburetor. Try the primer bulb again, it should pull new fuel from the carburetor if the two connections at the carburetor have not been reversed. This is a kind of 'hit or miss' business when connecting fuel lines that involve the primer bulb. Nothing seems to be marked on the involved parts. Hope this helps

May 15, 2010 | Garden

1 Answer

I need to know how the fuel lines should be connected for Ryobi 725r? There are three.


The line from the fuel tank that has the filter on it goes directly to the carburetor below the primer bulb. One line comes from the carburetor to the primer bulb. The other line goes from the primer bulb to the fuel tank. Primer bulb can be pressed to determine which side is pulling fuel (line from carb) and which is pushing (line to fuel tank).

May 15, 2009 | Garden

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