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Tecumseh throttle backs off full throttle on its own


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#1 bread320i OFFLINE  

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Posted November 22, 2011 - 04:29 PM

My Ariens snowblower has a Tecumseh HH100 engine. Engine runs pretty good, except the throttle likes to back off on its own. It back off slowly to about 1/2 - 3/4 throttle. It didnt do this last year, and this year I took the carb apart for a cleaning.

What did I do?

#2 JDBrian OFFLINE  

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Posted November 22, 2011 - 05:20 PM

There is normally friction in the throttle control that holds it in position. If there is wear in the control or it is loose then it can slip back on you. I have an old tiller with a 3hp B&S that does the same thing. I just attached a spring to it that keeps it pulled WO. At some point I'll probably install a new control to solve the problem properly.

#3 olcowhand ONLINE  

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Posted November 22, 2011 - 05:33 PM

I have tightened them up by taking the throttle lever assembly off, then re-stake the rivet pin to tighten it up. Set the rivet head on an anvil or other heavy solid metal object, then use just a hammer or hammer/drift to peen the opposite end of the rivet down until you can feel it has snugged up the friction.

#4 DH1 OFFLINE  

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Posted November 22, 2011 - 05:50 PM

I have tightened them up by taking the throttle lever assembly off, then re-stake the rivet pin to tighten it up. Set the rivet head on an anvil or other heavy solid metal object, then use just a hammer or hammer/drift to peen the opposite end of the rivet down until you can feel it has snugged up the friction.


:ditto: That's the way I do it too.

#5 MH81 ONLINE  

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Posted November 22, 2011 - 05:58 PM

Another :ditto: here. Had a couple I've added some friction material to, but usually, just smack 'em one.

#6 GTTinkerer OFFLINE  

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Posted November 22, 2011 - 07:35 PM

I have also used a pair of Vise-Grips to compress the rivet, sometimes easier to do than take it apart.

#7 olcowhand ONLINE  

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Posted November 22, 2011 - 08:25 PM

I have also used a pair of Vise-Grips to compress the rivet, sometimes easier to do than take it apart.


Yep, done that too....when it works. But the hammer is in the waiting if it needs more persuading!

#8 Bruce Dorsi OFFLINE  

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Posted November 23, 2011 - 08:57 AM

Tightening the rivet is the best way to fix the problem, as others have mentioned.

If an engine is controlled by a throttle cable, another trick is to put a slight bend (mild kink) about mid-way in the cable. ...This adds friction, and will usually overcome the problem.
  • Bolens 1000 said thank you

#9 bread320i OFFLINE  

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Posted November 23, 2011 - 03:52 PM

Thanks everyone for the advice. Hopefully after Turkey day I'll tackle this issue

#10 olcowhand ONLINE  

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Posted November 23, 2011 - 07:57 PM

Tightening the rivet is the best way to fix the problem, as others have mentioned.

If an engine is controlled by a throttle cable, another trick is to put a slight bend (mild kink) about mid-way in the cable. ...This adds friction, and will usually overcome the problem.


The only problem with this method is if the wire isn't the thicker style. If too much restriction the wire can wad up at the throttle lever. Had it happen before. If the heavy duty wire, this will work fine, but don't try it on the light duty cables.




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