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Poulan LT7000 weed eater starts, runs for a short time, then dies

#1

J

johnny7

Hi all, I have a Weed Eater Poulin LT7000 that I am having some issues with. The unit was brought to me not running. After replacing fuel lines and filter, fuel bulb, diaphragms on both sides, metering diaphragm, plug, and fresh mixed fuel, I started it up and it ran great for about 3 minutes and then it dropped RPM’s, bogged right down and stalled. Tried to start it back up and it was a no go. I took the carb off and took it apart thinking that I had something in backwards but everything was proper.

Again, primed, started, ran for about 3 minutes, bogged and stalled.

Before I go further, I want to post a picture of the gas lines to make sure that they are on correctly. If that is the case, it must be the carb and will have to order one.

The carb on it is a Walbro WA-218 and I am having a hard time finding the exact model on Amazon too. Both fuel lines are on one side and what I can find for replacements have the fuel lines on opposite sides.

Any suggestions?

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#2

Tiger Small Engine

Tiger Small Engine

If you think the fuel lines may be on backwards, simply reverse them and try running it that way and see if that fixes it. When you had carburetor apart, did you clean it thoroughly? It is always better to keep original carburetor before replacing it (especially on 2-stroke? With an aftermarket replacement. How old is unit? How well is it running for 3 minutes before dying?


#3

I

ILENGINE

johnny7 said:
Hi all, I have a Weed Eater Poulin LT7000 that I am having some issues with. The unit was brought to me not running. After replacing fuel lines and filter, fuel bulb, diaphragms on both sides, metering diaphragm, plug, and fresh mixed fuel, I started it up and it ran great for about 3 minutes and then it dropped RPM’s, bogged right down and stalled. Tried to start it back up and it was a no go. I took the carb off and took it apart thinking that I had something in backwards but everything was proper.

Again, primed, started, ran for about 3 minutes, bogged and stalled.

Before I go further, I want to post a picture of the gas lines to make sure that they are on correctly. If that is the case, it must be the carb and will have to order one.

The carb on it is a Walbro WA-218 and I am having a hard time finding the exact model on Amazon too. Both fuel lines are on one side and what I can find for replacements have the fuel lines on opposite sides.

Any suggestions?
Click to expand...
No Gas line with filter goes to inlet side of carb(nipple carb body), Carb outlet to inlet side of primer(short nipple) and outlet primer(long nipple) return to tank. Basically tank to carb, carb to primer primer to tank


#4

J

johnny7

Tiger Small Engine said:
If you think the fuel lines may be on backwards, simply reverse them and try running it that way and see if that fixes it. When you had carburetor apart, did you clean it thoroughly? It is always better to keep original carburetor before replacing it (especially on 2-stroke? With an aftermarket replacement. How old is unit? How well is it running for 3 minutes before dying?
Click to expand...
at idle, it ran great, hitting the throttle, it was boggy and tried to stall. let off the throttle and went back to idle and eventually stalled.


#5

J

johnny7

ILENGINE said:
No Gas line with filter goes to inlet side of carb(nipple carb body), Carb outlet to inlet side of primer(short nipple) and outlet primer(long nipple) return to tank. Basically tank to carb, carb to primer primer to tank
Click to expand...
ok, thanks for this. I have worked on many weed eaters and this one with the remote bulb has got me confused. When it came to me, the hoses were broken and on the internet, there are no pictures of how those hoses should be connected with the remote bulb.

Also, if I can't get this carb working, I'm thinking that I might replace it with one on Amazon since they are under 25 bucks Canadian. I just can't find the exact one or even one that will work. A couple of months ago, I buggered around trying to fix a carb and I just couldn't get it to work even after I put in gasket and repair kits. A replacement carb was the solution.


#6

J

johnny7

johnny7 said:
ok, thanks for this. I have worked on many weed eaters and this one with the remote bulb has got me confused. When it came to me, the hoses were broken and on the internet, there are no pictures of how those hoses should be connected with the remote bulb.

Also, if I can't get this carb working, I'm thinking that I might replace it with one on Amazon since they are under 25 bucks Canadian. I just can't find the exact one or even one that will work. A couple of months ago, I buggered around trying to fix a carb and I just couldn't get it to work even after I put in gasket and repair kits. A replacement carb was the solution.
Click to expand...


#7

J

johnny7

and here is a picture of the original unit when I took it apart

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#8

I

ILENGINE

the hose routing in the picture is correct. the hose closes to you on the carb is the inlet, and the one farther from you is the outlet to the primer and then primer back to tank

The WA-218 is superceded to WA-227 which is showing as NLA The OEM carb is 530069647 which subs to 530071639 which is available but is around $60 US.


#9

B

bertsmobile1

I can never remember which way those remote purge bulbs go so I use the wet finger test
One side will blow so that hose goes to the return line in the tank
The other side sucks so that goes to the outlet side of the carb
the other carb line goes to the fuel filter


#10

J

johnny7

thanks everyone for the advise. Today, I will take my notes out and confirm everything and repost my results. After I read ILENGINE, I went out and reversed the hoses but I didn't start the unit up as I had other things on the go. Again, today I will get time to spend with my favorite weed whacker. Here is a picture of the hose configuration and after re-reading your posts, I believe the hoses to the carb are backwards in this picture. The filter is on the outside line going to the tank. Before I took it apart, I marked it with an F.

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#11

I

ILENGINE

Line to fuel filter

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#12

J

johnny7

Good morning, I still do not have this unit going. The lines are correct now, it does start and run for a while but only on half choke. After it's been running for about 15 seconds, if I open the choke wide or close it completely, it will die. And saying that, after about a couple of minutes, it will die on its own. I have replaced everything on the carb. I've adjusted the metering tab with a Walbro tool. Still nothing.

So, I'm thinking there is something wrong with the carb itself even though I thought that I've cleaned it out as much as I can. I McGivered a carb onto the unit and it ran fine but it wasn't the same carb at all. If that is the case, I ordered a replacement carb for it from Amazon but when I got it, the throttle cable was too short and didn't see any adjustment for that.

My new question now is, where do I get a carb exactly like the one that is on it. It is marked on the side as WA-218. That crosses to 530-069647 but that is where my problem starts. Both of those numbers on Amazon don't show the same carb as what I need. Our local repair shop wants $120.00CA for a replacement. Researching even more, I find that on mymowerparts.com (https://www.mymowerparts.com/partdetail/1131/25880/21588.php) that it crosses to a Poulan 530-071639. Looking at the picture, the carb looks allot like what I need. That unit is $54.99US and then there will be the 70 bucks US to get it to me in Canada.

Before I abandon this unit, is there anything else that I can do or purchase that isn't going to exceed the cost of the unit?


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