QuestionQUESTION: Hi John. I have a Troy-bilt tiller with a Tecumseh HH60, 105106G motor. Two years ago it stopped firing, and I finally got around to replacing the points, condenser and coil. It runs, but I have two problems. First, I don't remember how the throttle/governor linkage attaches, and second, I think the governor itself may be broken. I detached all linkage from the governor arm and the arm remains motionless (except for vibration) throughout the rpm range of the motor.
Are you aware of any drawings I might consult for properly attaching the linkage? Have I given you enough information to opine whether the governor is broken?
Thanks.
ANSWER: Hello Mike:
I am in the Process of Replacing my Camera and Taking Pictures of Some Carburetor Linkage. There are No Pictures Offered Online. I will Post the Pictures Online at this Addy; http://www.myspace.com/answerman54. I Hope to have the Photos Online by the Weekend. Here is an Explanation of How the Governor, Linkage and Throttle Linkage Function. The Throttle Cable Attaches to the Throttle Control Bracket. The Cable Moves a Slide that Moves a Pivot. The Pivot has the Spring Attached to it and to the Governor Arm. The Solid Link Connects to the Governor Arm and goes to the Throttle Shaft on the Carburetor. When the Throttle Cable is Moved it Moves the Pivot and the Pivot Pulls the Spring. The Spring Pulls the Governor Arm and the Governor Arm Moves the Throttle Shaft. Usually the Spring is in the Lower Hole in the Governor Arm and the Solid Link is in the Top Hole of the Governor Arm. Now Lets Reset the Governor. The Internal Governor will be Felt Only Once the Governor Shaft and Governor Arm are Set. Then you can Feel the Governor and Tell if it is Operating Properly. To Reset the Governor; Loosen the Governor Arm Bolt and Turn the Governor Shaft Clockwise Until it Stops. Using the Governor Arm Hold the Carburetor to Full Throttle. Now with the Shaft Full Clockwise and the Governor Arm and Carburetor Held at Full Throttle, Tighten the Governor Arm Bolt. If the Engine Still Runs Full Throttle, then Reverse the Rotation of the Governor Shaft, but Still Hold the Carburetor at Full Throttle with the Governor Arm. If it Still Runs at Full Throttle, then Check the Internal Governor. Since this is a Tecumseh Engine, I have a PDF Site Addy that May Assist you Also. http://www.tecumsehpower.com/CustomerService/BSI.pdf. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 9pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
Hello Again Mike:
Ok I May have Worded it Wrong. The Spring is in the Hole Nearest the Governor Shaft and the Link is Usually in the Fartherest Hole Away from the Governor Shaft. Hope this Helps. I am Here if You Require More Assistance. Let me Know What Happens, Please. Thanks.
Good Luck
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: John, I thought I'd give you an update on my progress. Based on your advice on how to set the governor, and the failure of the governor to work properly, I opened the crankcase and found that the pivot arms on the governor gear assembly had broken off. So, I purchased a new gear assembly, a new gasket, and a new oil seal, and reassembled the engine. It's running properly now.
I also wanted to let you know that the linkage issue works a little differently on this Tecumseh HH60, and not quite as you described it in your response to me.
On this engine, the throttle control cable attaches to the upper hole on a pivot. In the lower hole of the pivot, a spring connects the pivot and the throttle shaft. When the throttle cable is pulled, the spring pulls the throttle shaft wide open.
A solid link attaches on one end to the governor arm and on the other to another hole in the throttle shaft. As the RPMs increase the governor pushes against the spring, thus regulating the RPMs.
I'd be happy to provide a picture if that would be helpful to anybody.
Again I'd like to thank you for all your help.
AnswerHi Mike:
OK Thanks. I Should have Checked the Linkage Before I Sent the File. I See I Made Several Files on Carburetor Linkage. If you Would Not Mind, can you Post the Photos on my My Space? My Wife and Daughter Turned a Simple Project Into a Major One. They are Looking for the Right Camera and the Right Program for my PC, so I can Take Photos of Linkage of Engines in the Shop. No One Online Offers Pictures and I Figured I Could Post Some Internal Ones Also. Thanks for the Update and I am Glad you Got it Running. You Are very Welcome. Till Next Time. May All Your Mechanical Problems be SMALL ONES and May the All Mighty Bless You and Yours. Thanks Again.
Best Wishes and Good Luck
Respectfully
John
