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Repair craftsman I have a Craftsman lawnmower with a 143.944500 4 cycle engine.The throttle does not idle. The throttle link (funny bent wire) to the throttle and it is possible to change the speed by moving the wire forward and back However, the front end of the wire is not connected to anything and the throttle will not stay in one place. What is missing? Or what am I missing.

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  • Alice Long
    Alice Long Mar 29, 2014

    I have just read the posting about the governor and what it does. Very interesting but the governer is connected to its spring. This is another wire which in my owners manual is called the throttle Link. Does it connect to the governer al well? Thanks - Alice.

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Here is a link to the parts diagram for your engine. On the top of the carb there should be a red knob (part 215 on the diagram). This is the throttle control. Turn, push, or pull it (I don't know which) to change the engine speed. If the part is missing you can order a new one from that page. http://www.searspartsdirect.com/partsdirect/part-number/Craftsman-Parts/All-Products-Parts/32410/0071/143/Model-143944500/0247/1503500?keySuffixId=&pathTaken=partSearch&pathRender=modelComponent&documentCompId=10031895&diagramPageId=00001&productTypeId=&searchModelNumber=143944500&subCompDesc=Craftsman%204-cycle%20engine&brandDesc=CRAFTSMAN&modelDesc=ENGINE&blt=11&shdMod=143944500&keyId=215

Posted on Apr 06, 2014

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SOURCE: craftsman Lawnmower model #917.377292 won't stay running

pull the carb. and clean it and put a kit in it. This should give you a good start. Do a preventive maintenence of the rest of the engine also.Good luck.

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SOURCE: cylinder head torque specs

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Sounds like the skirt is too long for the cutting height you are using, either raise the cutting height or shorten the skirt. Remember it's a safety guard for trash kicked up when mowing!

Posted on Apr 26, 2009

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SOURCE: tecumseh engine #143.985510 - carb linkage hook-up

Hello:

The Carbuertor Throttle is Held in the Full Open Position Until the Engine is Started and Running, then the Governor and Spring Work together to Keep the Engine RPMs to the Desired Setting.
The Following is an Explaination on How the Governor System on Small Engines Function.
>>The Governor System behaves like an Unending Tug of War between One of Two Governor Springs, which Pull the Throttle Toward the Open Position, and a Spinning Crankshaft, which Tries to Close the Throttle. When the Load on the Engine Increases - a Typical Example is when you Move your Running Lawn Mower from the Driveway to the Grass - Crankshaft Revolutions Drop. But the Governor Spring is Still Tugging, Causing the Throttle Plate to Open. In Response, a Larger Volume of Air-Fuel Mixture Enters the Carburetor, Increasing Engine Speed to Compensate for the Increased Load. The Crankshaft Speeds Up, and the Tug of War Resumes, until a New Equilibrium is Achieved. With Each Change in Load, the Tension Between the Governor Spring and the Load Brings about a New Equilibrium, known as the Engine's Governed Speed. Neither Side Wins until the Engine is Shut Off. At that Point, without the Crankshaft Spinning, the Governor Spring Pulls the Throttle to the Wide-Open Position. Two Types of Governors are Common on Small Engines - Mechanical and Pneumatic.
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

Posted on May 13, 2009

  • 95 Answers

SOURCE: My son has a 3 year old Craftsman lawnmower with a

There is a governor adjustment on it.Find the governor spring coming from the carburetor the link will lead to a governor spring hooked to a metal tab,by bending the metal tab it will pull the spring tighter making the engine run at a higher rpm

Posted on Aug 17, 2009

Testimonial: "Thanks for the quick response. This will be very helpful. The info is very much appreciated. "

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