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Help: Sears 10xl walbro carb adjustment


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#16 Firefighter912 OFFLINE  

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Posted July 16, 2015 - 11:02 PM

Ok I'm fixing to install it to lme specs. Let you know how it goes

#17 EricFromPa ONLINE  

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Posted July 16, 2015 - 11:03 PM

Seat looks strange.Is that a metal seat?If so it needs a rubber tipped Needle.

 

Here I took a couple pics of a junk LME 27 off of a 72 HH100.This carb had a severely worn throttle shaft as you can see in the 3rd pic. :rolling:

 

I cut it apart to learn a bit on how to clean them.It helped alot.I can clean and tune them now anyway.

 

1st pic with rubber seat.2nd pic with seat removed.
100_1400.JPG 100_1401.JPG

 

 

100_1402.JPG



#18 Firefighter912 OFFLINE  

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Posted July 16, 2015 - 11:08 PM

Also, how do you take this drain off? I need to replace the seal inside the bowl that's on it.

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#19 Firefighter912 OFFLINE  

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Posted July 16, 2015 - 11:09 PM

It looks black to me. Rubber

#20 TAHOE OFFLINE  

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Posted July 17, 2015 - 07:26 AM

If you get too frustrated, contact Mark at  www.carbrescue.com.

He rebuilt mine and mounted it to a test tractor and got it close to tuned.


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#21 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 10:18 AM

How much do I need to turn on the fuel shutoff

#22 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 10:30 AM

Well the spark plug was wet earlier so I kept adjusting the carb.

Now the spark plug is dry but black. Does this mean it's too lean?

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#23 TAHOE OFFLINE  

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Posted July 17, 2015 - 11:33 AM

black is still rich, white would be lean.



#24 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 12:12 PM

Here's it running. Uploading another video showing how now..it doesn't want to stay running



#25 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 12:59 PM

Well I turned bottom adjustment back to seat then opened it one turn. Got the engine to run. Runs decent at high rpms but when I low it to low rpm...the exhaust puts out black smoke and wants to not run good.



What am I doing wrong?

#26 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 02:16 PM

2nd video



#27 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 04:58 PM

I'm just going to buy a new carb. I think this one is shot. I had hope to be mowing with it this weekend but that's my luck.


High rev is does fine but at low idle...it's shooting out black smoke and wants to stall

#28 Bolens 1000 OFFLINE  

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Posted July 17, 2015 - 05:12 PM

Ok a few things I'll point out to make sure you left no stone unturned

 

1) Have you gotten a rebuild kit for this carb and replaced the needle and seat?

 

2) You should have the gas all the way open when running the machine and making adjustments.

 

3) Have you let this carb soak overnight and then blow it with compressed air? A simple spray of carb cleaner is not enough to get into all the small ports that may be clogged.

 

4) Are you making adjustments as soon as you start the engine cold? If so your never going to get anywhere, for adjusting the carb initially  set it to factory specs then start the motor and let the engine run atleast 10-15 minutes , even if it runs like crap keep it going until it gets warm  to operating temperature , once the engine is warm start the coarse adjustment first (bottom screw) allow the engine to set itself for about 30 seconds before making another  adjustment, if you make adjustments too fast or on a  cold engine you'll never get the engine set right.



#29 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 05:17 PM

No, I didn't get new kit. All I ordered was a float and damper spring.

Yes, I know I should do all of that but.. winder if it's cheaper to just get a new carb. The throttle linkage moves some but not like crazy.

So do you think I need to get a rebuild kit or just buy a carb whuch has float set and only needs adjustment?

#30 Firefighter912 OFFLINE  

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Posted July 17, 2015 - 05:25 PM

And my throttle cable broke and my choke cable is frozen.


How is the throttle cable and brackets adjusted? The throttle piece bottoms out on the carb quick which puts the throttle lever on dash pretty low even though throttle is fully open




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