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Sears DLT Issues


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#16 KennyP ONLINE  

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Posted May 28, 2016 - 07:46 AM

Going to start tearing this apart today! Got to remove the deck to get to the lower side of the engine. PTO has to come off and a few other things. Should be a learning experience!

Governor should be here today or Tuesday. I also found a new muffler for it. That will get here next week.



#17 KennyP ONLINE  

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Posted May 28, 2016 - 06:35 PM

Got the new governor today. Pulled the engine and tore it down. Got it all back together. Having an issue now with the throttle linkage. Setting it as per the service manual resulted in a full throttle condition. After numerous adjustments, I have it usable.



#18 KennyP ONLINE  

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Posted May 30, 2016 - 06:11 AM

Here's the old governor.

DSCN1781.JPG



#19 bbuckler OFFLINE  

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Posted May 30, 2016 - 09:44 AM

Here's the old governor.

attachicon.gifDSCN1781.JPG

New one fixed it ? I got to do the same to a dlt I have. 


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#20 KennyP ONLINE  

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Posted May 30, 2016 - 03:43 PM

Not completely! Cured the over rev issue, but still loses power under load.



#21 bbuckler OFFLINE  

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Posted May 30, 2016 - 05:08 PM

If a opposed twin would fit in mine I would replace it with one


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#22 KennyP ONLINE  

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Posted May 30, 2016 - 06:32 PM

I thought about that, but that would drop HP a bunch.



#23 John Arsenault ONLINE  

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Posted May 30, 2016 - 06:42 PM

I thought about that, but that would drop HP a bunch.

 

 

I been reading this all along and thought you were having a carburetor related issue (black smoke , black plugs just  after an hour of use). but did not want to mislead you. So I did some researching as I would my own tractor and found this guy that had the same problem as you with it stalling under load.

 

 The problem was in the carb. The carb is a Nikki and the "jet" is located in a strange spot. This twobarrel carb has only one jet and it is located at the bottom of the fuel bowl where fuel from the bowl first get pulled from the bowl. The issue I had is that there is an o-ring seal down stream of the jet that sits in fuel 100% of the time. This oring was deteriorated and the seal had failed. Under heavy fuel draw, fuel from the bowl was bypassing the jet and the carb was running rich. Briggs changed this design on later model years.

 

Are you still getting black smoke and black plugs?


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#24 KennyP ONLINE  

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Posted May 30, 2016 - 06:48 PM

Yep! I had the carb apart and saw nothing that looked like a jet.

 

 

E#DIT: Looked through the parts list and there is no jet listed. Only a nozzel.


Edited by KennyP, May 30, 2016 - 08:16 PM.
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#25 KennyP ONLINE  

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Posted May 31, 2016 - 08:05 AM

I'm going to pull the carb back off and look into this. Seems there is an o-ring at the bottom. That may be the culprit. The exploded view isn't very clear on what goes where. Just not a lot in there to mess with. Item 1123B is the o-ring.

ScreenShot015.jpg

 

 

I looked up the kit and it's $75-80.



#26 KennyP ONLINE  

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Posted May 31, 2016 - 01:52 PM

I been reading this all along and thought you were having a carburetor related issue (black smoke , black plugs just  after an hour of use). but did not want to mislead you. So I did some researching as I would my own tractor and found this guy that had the same problem as you with it stalling under load.

 

 The problem was in the carb. The carb is a Nikki and the "jet" is located in a strange spot. This twobarrel carb has only one jet and it is located at the bottom of the fuel bowl where fuel from the bowl first get pulled from the bowl. The issue I had is that there is an o-ring seal down stream of the jet that sits in fuel 100% of the time. This oring was deteriorated and the seal had failed. Under heavy fuel draw, fuel from the bowl was bypassing the jet and the carb was running rich. Briggs changed this design on later model years.

 

Are you still getting black smoke and black plugs?

That's exactly what it was! A little o-ring on the part the solenoid screws into (main jet is in this). Changed out the o-ring and it straightened right up! Went out back and mowed for about 15 minutes and not a hiccup! Thanks John!


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#27 KennyP ONLINE  

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Posted June 03, 2016 - 04:41 PM

It seems to be doing fine now, so tomorrow morning it gets shipped to Wichita to my son's house. He now has a couple acres to mow! I'll be back Sunday!






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