Question about Poulan/Weed Eater No. Te475 952711797 17" Le Gas Trimmer/Edger

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Diagram fuel lines tank primer carbutor poulan pro weedeater

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I have no diagram but here are the instructions on how it goes.
The small diameter line out of fuel tank (has filter in-tank on end) connects directly to the side of the carburetor that has the fuel pump....that is the cover without the hole in it. Other larger diameter fuel line out of tank connects to the longer nipple on the external purge/primer bulb. The bulb "pulls" fresh fuel from the fuel tank to the carb and then out of the carb to itself, where it then "pushes" any air/old fuel back into the fuel tank. The remaining larger diameter fuel line in this setup goes from the metering chamber (has cover with writing on it and a vent-hole) side of the carburetor to the smaller nipple on the purge/primer bulb. Again, on the primer bulb, the longer nipple has a line going directly from it to the tank. This is the return line. The shorter nipple on the bub has a line from it going to the metering chamber side of the carb. If the purge/primer bulb is on top of the carb...small line from carb body to small hole in tank with filter. Larger diameter line goes from the bulb on the fuel pump side of the carb to the larger hole in the fuel tank where sometimes the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank. Otherwise, the line should enter the tank for about 1/2" or so.

Posted on May 28, 2011

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  • aevx Jul 14, 2011

    Excellent advice rycgl. After my Poulan/ZAMA carburetor seals dried out (no rebuild kit for my model) I bought a new replacement on ebay for $26. However, after a few minutes running, it began to starve for fuel. To cut to the chase, after a few disassembly passes, I found that the internal screen filter beneath the fuel pump (the bottom cover with no vent) was totally full of powdered aluminum. Took a couple passes to get it cleaned out, but the symptom of a fuel restriction is that the primer bulb will not immediately return to its popped-out state. Gas should easily flow through the complete circuit and back to the tank. Terrible factory quality from ZAMA. . . . Also, IMHO, the only replacement fuel line to use is the green Tygon stuff that doesn't die a fast death with ethanol in fuel.

  • Roy Cagle
    Roy Cagle Jul 14, 2011

    I agree with you 100%. The big box stores are now selling that Startron ehtanol fighting additive. About 6.50 a bottle. I've done Ryobi's and they have a KIT for them at Home Depot with the 2 lines, an install wire, and the purge/primer bulb. Runs about 7.00. That kit has that black PVC fuel line. I'm with you, prefer the Tygon. It doesn't last forever, but it is fairly good quality and it's easy to tell when it is needing replacing, as it loses it flexifbiltiy. It was my pleasure to help you (I realize you know QUITE a bit more than most of the posters on here) and wish you luck with ALL your upcoming repairs. I don't understand that you couldn 't get a carb kit for the ZAMA. I thought they had rebuild kits and gasket and diaphragm kits for all of their carbs? Thanks for the reply and the nice vote. I appreciate you coming back to do so!

  • peter gorman Jul 30, 2012

    On my Poulan Pro pp125, I had a fuel starvation problem too, developing gradually. I checked to see there was no carbon build up on the exhaust screen, exhaust port or piston. Then I realized the fuel line was disintegrated. After taking apart the carb to clean it, I found strings of plastic from the fuel line in the area of the big needle valve. I had the carb apart twice, carb cleaner and compressed air through all the passages, but upon reassembly the primer bulb still wouldn't bring up much gas (even though the internal carb fuel screen was clear and I could tell there was good suction in the fuel line). I could get it running great for about a minute, perfect idle and quick throttle response. Then it would quit, and would only occasionally start for brief periods. I'm guessing there might still be a blocked passageway somewhere, but I'm ready to just toss it and buy another trimmer. I'm not sure it's worth spending money on a new carb or any for time messing with it. Any ideas on something I might be missing in diagnosing the problem? Thanks!....Pete

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Possible gas cap replacement

Posted on Jun 28, 2015

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I bought a new carburetor but still have the same problem with gas pouring out of the carburetor. I got it to start but it would load up and die but restart fairly easy. I also replaced the primer pump but it seems to have no effect whatsoever but the hookups are supposedly correct. Help!

Posted on Jun 01, 2013

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Posted on Jan 02, 2017

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1 Answer

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ok If you have a Walbro WT series carb "without" a built on primer bulb here it is. First off if the fuel lines disintegrated you MUST disassemble it and clean it out. The MOST infintesimle speck of gas line trapped, can allow good prime and bad operation. OK? Don't be lazy on this. Just be delicate removing the flaps gasket and diaphram. ZAMA GND-12 Is the replacement Gasket and diaphram kit fot that carb. Use a cleaner, compressed air or blow good thru it. OK Now...Primer bulb, Carb, and Fuel tank, re connects: Smaller Diameter line comes from Gas tank (Connect filter screen to this in tank) to the short Straight brass carb connector. Primer bulb suction goes to the bent carb brass connector. If small line brings fuel "in" this other line sucks it back "Thru the primer bulb" and the blow side of the primer bulb sends it back to the fuel tank! So...Small Line brings fuel "TO/IN" carb thru short brass connect on carb. Other carb connect goes to bulb suction "IN", Then primer bulb "Pressure OUT" goes thru the larger tube "back to fuel tank". Trust me I know how frustrating a simple diagram is to find online fo this set up. And if you have a carb problem on top of the hook up uncertainty you got frustration. Not only was online help hard to find (Mfg...etc NFG at all!) My local repairshop in BBrook NJ could not tell me how!!! and thats no lie! Walbro has a "generic" carb diagram but no "hook up info" specifically. Poulan don't list it either. And these things routinly fall to pcs. all 3 of mine crumpled together on yr. 3 of use.

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