Small Engines (Lawn Mowers, etc.): Engine stops and overheats, briggs stratton, air element


Question
Dear John,

You got it right on spot--it did not take another year or two. Only after last good mowing, the problem came back--the engine would start, run for a few seconds, then choked and stopped. And there is no more use adjusting the little knob and the spring screw.

How do I clean and rebuild the carburetor? Do I take it apart and replace some parts? How do I decide which parts to replace?

Thank you very much and may our gracious God bless you abundantly!

Senjie
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The text above is a follow-up to ...

-----Question-----
Dear John,

By adjusting two little screws underneath the Clean Air element compartment, my engine runs again. Thanks for directing my attention to caburator...

Cheers,
Senjie
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The text above is a follow-up to ...

-----Question-----
Hi John,

What is Starter Fluid and how do I run on it? I really appreciate your help!

Regards,

Senjie
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Followup To

Question -
Mower: S1742, John Deere Scott, bought 2001.

Engine: Briggs & Stratton, model 311777, type 0143-E1, code 001117ZD.

Problem: it starts, but only seconds later, stops before I even moved the machine. Earlier, it did mow a little while before this happened. I found that the box with a pipe behind and below the DHV box gets very hot instantly. I changed oil and filter, spark plug, and cleaned the Air Cleaner Element (foam).

Answer -
 Hello Senjie:

 Check the Muffler for Blockage and Inspect the Exhaust Port for Blockage. If these are Clear, then the Problem could be the Valves need Adjusting. On Some Model of the Briggs (and other OEM's) Engines the Valve Adjustments are Moving and Requiring the Valves to Need Readjusting. It can Also be the Carburator needs to be Cleaned and Rebuilt. Will the engine Run using Starter Fluid and Stop Shortly after the Starter Fluid Use is Stopped? If Yes, then the Carburator is the Problem. If No, then the Valves Need Adjusting. You can View a Breakdown/IPL of this Engine at this Addy http://www.outdoordistributors.com/ and Click on the B. Then Select Briggs and Stratton. Then Select Dont have Part Numbers. Then Select the File # 31. Then Select the Folder # 311700. This will Download the Breakdown/IPL of this Engine. The Valve and Head Assembly is Located on Page 4 of 16 and the Carburator is on Page 5 of 16. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John
-----Answer-----
 Hello Senjie:

 Instead of Starter Fluid you can Use a Small Amount of Gas. Pour the Gas into the Throat of the Carburator. Be Carefull, Please. If the Engine Runs and Quits when the Gas is Used Up, then Clean and Rebuild the Carburator. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John
-----Answer-----
 Hello Senjie:

 Great!!! I am glad you got it Going. However, if you had to Adjust the Air Mixture Screws; you will need to Clean and Rebuild the Carburetor within the Next Year or Two. Thanks for the E-Mail Update. May all your Mechanical Problems be SMALL ONES and May the All Mighty Bless You and Yours. Till Next Time.

 Best Wishes and Good Luck

 Respectfully

 John

Answer
 Hello Senjie:

 Go to the Addy I Supplied Earlier and Go to the Breakdown of the Carburetor. Remove the Carburetor from the Engine and Disassemble. Soak the Disassemblied Carburetor in Carburetor Cleaning Solution Overnight and then Blow Out the Passages with Compressed Air. Install New Kit. Look for the OEM of the Carburetor. The Kit Number will be Briggs # 690191 for a Walbro OEM Carburetor and Briggs # 695427 for a Nikki OEM Carburetor. If this is a Walbro Carburetor with the Electric Shutoff Solenoid in the Bottom of the Carburetor Bowl, then Replace the Solenoid with a Bolt 4/3" long, That has the Same Threads and is the Same Diameter as the Solenoid. Try the Engine and See if the Solenoid was Causing the Problem, If the Bolt in Place of the Solenoid causes the Engine to Run Properly, then the Solenoid needs to be Replaced and the Cleaning and Rebuild is Not Necessary. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John