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Tecumseh LME Carburators


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#1 DH1 OFFLINE  

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Posted March 06, 2011 - 09:50 PM

These are Walbro LME carbs that are found on HH engines, the blue one is off a Sears???
LMG 002.jpg

From what I found out they also used Tecumseh carbs on HH100s, side by side comparison
Left Walbro LME - Right Tecumseh
LMG 004.jpg
LMG 008.jpg

These next pic show the 2 big welch plugs Tecumseh carbs have LME doesn't.
LME left - Tecumseh right
LMG 006.jpg

The Tecumseh carb shown is from a HM80 engine, choke arm is different but it looks like it would work on the HHs.

Attached Thumbnails

  • LMG 001.jpg
  • LMG 003.jpg
  • LMG 007.jpg
  • LMG 005.jpg

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#2 DH1 OFFLINE  

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Posted March 27, 2011 - 09:49 AM

HH.jpg

#3 IamSherwood OFFLINE  

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Posted March 27, 2011 - 02:40 PM

From what I've read, the service nozzle for the Walbro LME carbs is NLA.
In my research I've found that the original nozzle was factory installed, and then
cross drilled. It says in all the tec manuals that you can't therefore reuse that nozzle.
Reason being, that if not located back in the original position, fuel starvation would
be an issue.

Being the replacement service nozzle is now NLA, I've read from a few that they
where going to attempt to cut(in lathe) that groove(that the service nozzle had) into the original nozzle.
I haven't been able to find any confirmed successful results.

Anyone have any insight, input to this issue.
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#4 NUTNDUN OFFLINE  

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Posted March 27, 2011 - 02:46 PM

From what I've read, the service nozzle for the Walbro LME carbs is NLA.
In my research I've found that the original nozzle was factory installed, and then
cross drilled. It says in all the tec manuals that you can't therefore reuse that nozzle.
Reason being, that if not located back in the original position, fuel starvation would
be an issue.

Being the replacement service nozzle is now NLA, I've read from a few that they
where going to attempt to cut(in lathe) that groove(that the service nozzle had) into the original nozzle.
I haven't been able to find any confirmed successful results.

Anyone have any insight, input to this issue.


I am curious to this as well. The fact that you have to buy a service nozzle which is NLA is a bunch of crap. I have been lucky so far and haven't had to pull the needle out of any Tecumseh carb yet.

#5 NUTNDUN OFFLINE  

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Posted March 27, 2011 - 02:47 PM

Thanks for posting the comparisons Doug. You hands look like mine do right now LOL.

#6 IamSherwood OFFLINE  

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Posted March 27, 2011 - 03:03 PM

Thanks for posting the comparisons Doug. You hands look like mine do right now LOL.


Never mind his hands, look at his last picture.
OMG, that carb is on the couch. I bet the misses was out shopping.:laughingteeth::laughingteeth:

#7 NUTNDUN OFFLINE  

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Posted March 27, 2011 - 03:15 PM

Never mind his hands, look at his last picture.
OMG, that carb is on the couch. I bet the misses was out shopping.:laughingteeth::laughingteeth:


Haha, don't worry Doug, if that carb is on the couch we won't tell her.

#8 DH1 OFFLINE  

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Posted March 27, 2011 - 04:31 PM

From what I've read, the service nozzle for the Walbro LME carbs is NLA.
In my research I've found that the original nozzle was factory installed, and then
cross drilled. It says in all the tec manuals that you can't therefore reuse that nozzle.
Reason being, that if not located back in the original position, fuel starvation would
be an issue.

Being the replacement service nozzle is now NLA, I've read from a few that they
where going to attempt to cut(in lathe) that groove(that the service nozzle had) into the original nozzle.
I haven't been able to find any confirmed successful results.

Anyone have any insight, input to this issue.


I could be wrong but I believe the cross drilled nozzles are on the Tecumseh carbs not the LME carbs, all the nozzles I've taking out of the LME carbs were not cross drilled and can be put back in no problem. I'll post some pictures.
Biggest problem I find with the LME carbs is throttle shaft wear actually the housing seems to wear more than the shaft. This causes poor idle and low speed I find.

This is an early thread of mine on a tractor that had carb problems, loose shaft and it tells what I did to fix it, post #10 >http://gardentractor...1972-mf12g-264/

I WAS WRONG HERE DO NOT REMOVE NOZZLE UNLESS YOU HAVE A SERVICE ONE TO GO BACK IN ORIGINALS WON'T WORK.

Edited by DH1, March 27, 2011 - 06:40 PM.
correction


#9 DH1 OFFLINE  

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Posted March 27, 2011 - 04:35 PM

Never mind his hands, look at his last picture.
OMG, that carb is on the couch. I bet the misses was out shopping.:laughingteeth::laughingteeth:


I had it on my pants between my knees, I learned a long time ago not to do certain things or I'm in lots of trouble, problem is trying to keep track cause the list is long and always changing.

#10 IamSherwood OFFLINE  

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Posted March 27, 2011 - 05:06 PM

I had it on my pants between my knees, I learned a long time ago not to do certain things or I'm in lots of trouble, problem is trying to keep track cause the list is long and always changing.


My mistake. At first quick glance, that material looked like velour. When I read your response above, I was gong to ask you to, "Please tell us you don't drape yourself in valour.:smilewink:"
But then I looked again, and realized it wasn't velour. Whew.


I just had the nozzle out of the 12h LME. (should have taken pics)It is a 27 LME.
It had cross drilling twice, just below the thread. Not at 90 degrees, but close.
There was another cross drilling about 1/2" up from there.
I marked it, and got it back together in the same location. Both cross holes
had crap in them. Hopefully that might solve the starvation problem. I'll give
it a try tomorrow.

#11 IamSherwood OFFLINE  

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Posted March 27, 2011 - 05:27 PM

Another question about these carbs.
The kits.
Opened 3 kits in the past year, and found a whole lot of bits that don't fit or belong in these carbs.
2 different kits from stens (main needle too short, and bowl gasket too small, and idle jet not right)
They listed them as hh100, hh120 kits.
The other kit is bagged as "rotary". Not sure where I got it, but it says for hh100.
Anyways, I've got about 50 pcs of useless stuff (for this app), and not much of the right stuff.

Where is the right kit available?, Or is there a proper kit available?

#12 DH1 OFFLINE  

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Posted March 27, 2011 - 05:48 PM

Pictures of the nozzle, I pulled a nozzle out of another carb and found this

HH 023.jpg
1st pic left must be an original nozzle, right is the service.
If you look close at the threads you can see 1 tiny hole in the left nozzle, you would never get that back in lined up if you took it out. Learn something new everyday.
The 2nd and 3rd pic the little welch plug at the top in the float bowel area, must be where they drilled it out.
The right has 4 even tinier holes in the space between the threads. the rest of the nozzle looks the same for both.
Will IamSherwood you were right.

Attached Thumbnails

  • HH 020.jpg
  • HH 021.jpg

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#13 DH1 OFFLINE  

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Posted March 27, 2011 - 05:57 PM

Another question about these carbs.
The kits.
Opened 3 kits in the past year, and found a whole lot of bits that don't fit or belong in these carbs.
2 different kits from stens (main needle too short, and bowl gasket too small, and idle jet not right)
They listed them as hh100, hh120 kits.
The other kit is bagged as "rotary". Not sure where I got it, but it says for hh100.
Anyways, I've got about 50 pcs of useless stuff (for this app), and not much of the right stuff.

Where is the right kit available?, Or is there a proper kit available?

They seem to mix up the Tecumseh and Walbro kits for these engines. There is reference to HH100 having Tecumseh carbs on them but I've never seen one on that engine, always see Walbro LME.
Walbro has 2 kits for LME carbs K1 and K2

#14 IamSherwood OFFLINE  

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Posted March 27, 2011 - 06:17 PM

Am I ever glad you posted those pics.
I missed that little hole in the thread.
Pulled mine apart again, and found crap in there as well.
Like you say, probably impossible to get it realigned, but worth a shot.
Gonna keep looking into undercutting that thread to duplicate the service
nozzle.
Here is a pic of mine out of the LME 27

Posted Image
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#15 DH1 OFFLINE  

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Posted March 27, 2011 - 06:33 PM

HH 025.jpg
1st pic is, left K2 kit right Tecumseh kit

All the parts in the Walbro kit fit the LME carbs, no extra parts.
There are 2 Walbro kits K1, K2 depending on which LME carb you have.
Also says in instructions not to turn nozzle or it must be replaced with a new (service) one. I guess I didn't read it good enough before.:wallbanging:

Attached Thumbnails

  • LMG 009.jpg
  • HH 024.jpg





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