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Runs wide open when started and stays that way

Could it have to do with the throttle linkage? or the govenor linkage

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  • Measuring To... Master
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It is the governor linkage not connected up properly

Posted on Aug 18, 2013

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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kel1guy2002
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SOURCE: engine starts ok. stuck at

Hi and welcome to FixYa I am Kelly,

First off parts source:
http://www.partstree.com/parts/?lc=briggs_and_stratton&mn=406777-0128-E1&dn=29860008H

Next engine service manual:
http://www.mymowerparts.com/pdf/Briggs_&_Stratton_Service_and_Repair_Manuals_Spec_Charts/273521%20Twin%20Cylinder%20OHV%20BRIGGS%20&%20STRATTON.pdf
Governor and controls is in section 4 page 34 (begin) though page 40 (end)

This should be what you need to correct the problem. Just make sure that one of the pieces of the carb had not fallen off of the throtle control.. (butterfly x 2) They are mounted with screws onto the throttle shaft and if one comes off.... all the adjustments on the governor have to be un-done....

Thanks for choosing FixYa,
Kelly


Posted on Jul 30, 2011

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1 Answer

I have a toro ccr2000 that starts but when I get to the snow it shuts off


Shuts off -I would look for a bare place on the spark plug wire. Slows down and stops under load (snow) then check for a bind in the throttle linkage. The govenor is not opening the throttle as the engine slows down.

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Some saws have a throttle lock that locks the trigger to aid starting. Get a look at the carb to see if it opens when the trigger is pressed and closes when the trigger is released. If it stays open the lock may not be releasing or the throttle linkage is bound up or disconnected from the carb.

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I have a toro gts 6.5hp model 20017. The enginer is overreving a lot. I had changed the carburetor and believe i put the linkages correctly, however i noticed the governor arm is rotated slightly right...


The way i set the govenor is, slacken the screw on the engine govenor arm, push the arm fully over to open the throttle wide open, now turn the actual govenor shaft within the arm in the same direction, fully retighten the govenor arm screw,

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I have a yard machine push mower that is a few years old and it starts fine but runs at high idle unless you pull the choke out


Try adjusting the spring to the throttle. This would be on the carb and what the governor attaches to. The spring will be contected to the throttle and an anchor point that you would be able to bend slightly. I would also check to make sure the connector on the throttle shaft on the carburetor is in the correct hole. Hope this helps!

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1 Answer

It runs wide open all the time im wondering where idler arm setting is at


It sounds like the govenor spring has become disconnected or the clamp on the governor shaft has become loose and allowed the linkage to get out of adjustment. If problem has occurred suddenly it could mean the governor gear assembly inside the engine has broken and means the engine will need to be dismantrel to replace the governor gear assembly.
Check throttle linkage to see if spring is attached at both ends, one end on the throttle linkage and the other at the fixed point on the engine or to the end of the speed control lever. With engine stopped the spring should hold the throttle wide open and hand pressure on the linkage shoud be all that is needed to move throttle shaft closed to the idle position with no binding in the movement of the linkage.
If spring is OK and while engine is running, linkage should be able to be be moved to bring engine back to idle. If porblem has occurred gradually, then linkage will need re-adjusting. Loosen adjusting clamp on governor shaft, then holding linkage in wide open throttle position rotate shaft as far as it will go in the opposite direction to that requred to close throttle to idle . Re-tighten clamp.

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1 Answer

Starting problem


I had the same problem and what I did fixed mine. I got it running with the starter fluid then pushed the linkage (Rod) on top of the carb and ran the engine wide open (by pushing the linkage), then released... then wide open again. I did this 4 or 5 times. Then to my suprise something clicked in the carb and it began to run normal. I have alot of experience with car engines, but not small engines therefore this had me baffled. I feel I got lucky in the repair, because something within the carb was stuck. You can not just run it wide open using the throttle...you have to push the linkage (I guess it bypasses something). Hey it worked for me. I wish you good luck and let me know if I can help in any way.

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1 Answer

I had to repair pull cord, in doing so I took the throttle linkage carborator linkages off to get to the pull rope housing. I need schematics to show all the throttle control springs wire hook up to get...


go to sears.com and look up the actual engine number. they have a section for lawn and garden and in there there is a link to their parts lookup and they are very detailed. but you will need a pulse tach to set the govenor back to where it was and if it spun the govenor open too far due to the govenor not being hooked up, it could have came apart inside the motor and you will need to take it to a shop. as far as setting the govenor once you get it all back together, you need to push the throtle wide open and turn the govenor shaft in the same direction then tighten it down. yeah its not hard if you have done it before but if you havent and cant understand what i just said, save your time, and engine and have a shop fix it. and i havent seen a motor in my 9+ years that you had to remove all of that to fix a recoil rope.

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Carb and throttle linkage on a Tecumsen LEV120 361015A


You want the spring to hold tension against the governor.

May 17, 2009 | Garden

1 Answer

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)

May 13, 2009 | Garden

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