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engine idling way too high


ssshep's Avatar
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12-30-02, 11:43 AM   #1  
engine idling way too high

Hello Everyone:
I have a 10 year old 10/28 snowblower with a Tecumseh engine. My problem is that when the blower is idling, it seems like it is going to explode. I mean it is really idling quite high. Looking for some advise regarding this, and if possible, some links as to where I can get ( free or for a price ) a Troubleshooting manual for my blower as I'd love to hang onto it for a couple of more years.

Thanks in advance...........ssshep

 
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12-30-02, 10:09 PM   #2  
Elmo66
ssshep,

the govoner may be out of whack. most snow blowers have 2 cycle engines with no throttle adjustment and it's not uncommon for the throttle lever to come loose on the govoner shaft. If you can post the engine model number i have several shop manuals for tecumseh engines and can scan and email the nessessary page to you.

John

 
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12-31-02, 01:15 AM   #3  
Hello ssshep!

I agree with elmo...you have a governor problem, either inside the engine or outside at the linkage, carb, or governor arm.

Let us know what you find!


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
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12-31-02, 05:43 AM   #4  
hey guys:
Thanks for such a quick response. I'm pretty sure the engine type is either an HM70 or HM80.

Thanks again.......ssshep

 
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12-31-02, 09:50 AM   #5  
hey guys:
Thanks for such a quick response. I'm pretty sure the engine type is either an HM70 or HM80.

Thanks again.......ssshep

 
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12-31-02, 01:45 PM   #6  
It may be as simple as the throttle shaft in the carb. is gumed up and stuck in the open throttle position. Chech the throttle shaft to be sure it opens and closes freely.

 
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01-01-03, 12:55 AM   #7  
You are right Roger! I didn't think to mention that. Check that out too ssshep.


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01-01-03, 10:42 AM   #8  
Tcumcman
Too Fast....

SOMETHING....is keeping the throttle opened up. Governor
is NOT WORKING....WHY?? All good recommendations thus far.
Could be stuck throttle shaft....Could be loose governor clamp,
Could be internal governor problem (worst case scenario), or
a simple linkage, spring problem. To Elmo....MOST snowblowers
are CERTAINLY NOT....2 cycles. Vast majority are 4-cycle, and
this will certainly dominate the snow equip. industry as E.P.A.
regulations continue to put the 2-cycle market....out of business
in the 3-5HP engine market. If you determine the throttle
shaft is not binding in the carburetor housing....hold your finger
against the governor arm and "goose" the throttle. If you
DON'T FEEL the governor pushing against your finger, then
the internal governor is NOT WORKING. That'll be the fix.

Tcumcman

 
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01-02-03, 09:36 AM   #9  
thanks to everyone !. Hopefully I'll get a chance to work on it this weekend as if that happens, I'll let everyone know as to how I made out. Thanks again all !!!

 
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01-07-03, 06:00 AM   #10  
Thanks for everyone's suggestions. Between taking off the carburetor and soaking it in Dunk Degreaser, and making some adjustments on both the Main and Idle adjustment screws, the old beast seems to be working fine. Idles normally now. Thanks again !!!!!!!!!!!!


ssshep

 
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01-07-03, 09:03 PM   #11  
Good job! Apparently it was a stuck throttle. Thanks for letting us know how it went!


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
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