Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Help: Sears 10xl walbro carb adjustment


  • Please log in to reply
30 replies to this topic

#1 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 08:05 PM

I just installed a new float and damper spring in my walbro Lme 29 carburetor. I tried getting the float adjusted right. I have a picture below.

I adjusted the carb how walbro said to. Got it to fire up but it seemed to be flooding. So I turned to bottom screw and it started to shut off. I turned it back up some and then turned the screw on the side but couldn't tell nothing.


Anyways, I raided the throttle and it ran good but thinking it was still flooding. I lowered the throttle all the way down and it then turned off.

I can't get it to fire up now.

The carburetor also looked to be having gas coming out of it from the top. I have a picture of it below too.

I took the spark plug out and it was black and wet..so it was flooding

I will upload a video as well.

What am I doing wrong?!?

Attached Thumbnails

  • 20150716_190320.jpg
  • 20150716_190343.jpg
  • 20150716_204258.jpg


#2 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 08:29 PM

Video of it running and flooding


#3 Trav1s ONLINE  

Trav1s

    Got points?

  • Senior Member
  • Member No: 5472
  • 2,603 Thanks
  • 3,750 posts
  • Location: Cedar Rapids, IA

Posted July 16, 2015 - 08:44 PM

My experience with Walbro carbs ---> either they work or they don't. 

 

I fought a Walbro on my JD 120 for over a year and ended up swapping on a different carb.

 

Definitely change the oil before you run it as gas will thin it out and do bad things.

 

Here are the basic steps I would take if it were my machine:

- soak carb in carb dip

- blow out all passages with compressed air

- rebuild with new needle, gaskets, and float following Walbro specs

 

Let us know how this goes.



#4 TAHOE OFFLINE  

TAHOE
  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 24522
  • 6,497 Thanks
  • 4,949 posts
  • Location: "Hamiltucky" Ohio

Posted July 16, 2015 - 08:45 PM

I'm betting that float is not set right or a little heavy causing it to flood. If that spring pushes float down, maybe remove it and see how it works.  I also start out at 1 1/2 turns on both screws and work from there. If I remember the side screw is for low idle mixture, the main on the bottom is for the rest of the rpm range. 


  • Alc said thank you

#5 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 08:50 PM

The damping spring is suppose to be on there. I guess I can bring down the float some. Truthfully. Where it is at right now..it didn't move much.

Here's what the carb book says

When I got the carb the dampening spring wasn't there.

Attached Thumbnails

  • Screenshot_2015-07-16-21-47-39.png
  • Screenshot_2015-07-16-21-47-53.png
  • Screenshot_2015-07-16-21-48-07.png


#6 classic ONLINE  

classic
  • Senior Member
  • Member No: 52970
  • 3,465 Thanks
  • 1,610 posts
  • Location: New York

Posted July 16, 2015 - 09:07 PM

You will need to flip your float spring over and bend the tab on the float so that the float is parallel with the carb body. I have installed those float springs like yours is by mistake when I first started working on those carbs. Check the throttle shaft for side to side play. With the float set the way yours is now, it appears that it's allowing to high a level of fuel in the bowl. These carbs have to be spotless, and adjusting them takes some patients.
  • Alc said thank you

#7 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 09:28 PM

Bend which tab? The rear one?

Flip the spring which way?

Throttle has little side to side play but not a lot.

#8 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 09:33 PM

I got the small spring bend under the gasket..the big spring bend is near the float needle.

I thought it said to have the small bend under the gasket?

#9 EricFromPa OFFLINE  

EricFromPa

    Tractorholic

  • Senior Member
  • Contributor
  • Member No: 2135
  • 2,304 Thanks
  • 2,336 posts
  • Location: Bedford County Pa.

Posted July 16, 2015 - 09:36 PM

Did you blow the carb out with an air compressor?

 

If you did you more than likely blew the rubber valve seat out.It will never seal without that little bugger.I've done that a few times.Usually if you blow it out you'll never find it unless your really lucky :rolling:

 

imagehandler.ashx.jpg



#10 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 09:38 PM

No. We just use carb cleaner though

#11 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 09:42 PM

Do you see it?

Attached Thumbnails

  • 20150716_224039.jpg
  • 20150716_224054.jpg


#12 classic ONLINE  

classic
  • Senior Member
  • Member No: 52970
  • 3,465 Thanks
  • 1,610 posts
  • Location: New York

Posted July 16, 2015 - 09:49 PM

The tab on the float that the needle hangs on needs to be slightly bent away from the float. This will allow the needle to close off the fuel supply sooner. Flip your float spring over, end for end. You are correct that the small bend in the spring goes under the bowl gasket, but flip your spring over so that the small bend is at the other end of the float hinge pin. If you look close at the above diagram, you can see what I'm saying about the spring.

#13 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 09:51 PM

So the small bend doesn't face the choke direction?

#14 Firefighter912 OFFLINE  

Firefighter912
  • Senior Member
  • Member No: 72788
  • 12 Thanks
  • 123 posts
  • Location: GA

Posted July 16, 2015 - 10:03 PM

Ok how does this all look now?

Attached Thumbnails

  • 20150716_225951.jpg
  • 20150716_230000.jpg
  • 20150716_230041.jpg
  • 20150716_230054.jpg
  • 20150716_230109.jpg
  • 20150716_230131.jpg


#15 classic ONLINE  

classic
  • Senior Member
  • Member No: 52970
  • 3,465 Thanks
  • 1,610 posts
  • Location: New York

Posted July 16, 2015 - 11:01 PM

The best you can do is give it a try. If that still pours fuel fuel out of the carb and floods, the needle and seat are not making a seal when the float is up. I just got done with an HH100 Tecumseh engine and Walbro LME carb rebuild, and the tractor runs fine uphill, downhill, and through all RPM ranges.




Top