Simplicity snow blower engine started then stopped

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  #1  
Old 10-13-12, 06:27 PM
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Question Simplicity snow blower engine starts then stops

Simplicity Sno-Away 8
Model#: 1691900
Engine: Tecumseh HMSK80 8HP

I changed the oil today then tried to start it by electric-starter. The engine ran fo 3-4 seconds then stopped...tried several times but still the same problem.

It was stored in my garage and there were gas leaks from the carburetor bowl drain twice this past summer.

Do I need to replace the carburetor?

Please suggest.

Thanks in advance.
 

Last edited by mrong; 10-13-12 at 06:49 PM.
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  #2  
Old 10-13-12, 07:46 PM
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The carb may be able to be cleaned. At the end of the snow season you need to shut the supply of gas off to the carb and run it dry. You left fuel in the carb all summer that evaporated and turned to sludge plugging the carb. Since you have the make and model of your unit and engine you should be able to search for a carb rebuild kit or a replacement carb.
 
  #3  
Old 10-13-12, 08:04 PM
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For eqpt. that's going to sit all summer or all winter I always siphon/ drain all the gas out of the tank,start it and let it run 'til it dies. Been doing it for yrs and no carb problems.
Mike
 
  #4  
Old 10-13-12, 08:06 PM
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PJMax,
Thank you foryour response. Can you or some one provide instruction of cab cleaning procedure?
thx
 
  #5  
Old 10-14-12, 08:19 AM
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On most Tec Snowblower engines the bowl nut is the main jet and will get blocked with varnish if left with any fuel in it, some have an adjustment screw up the center, some don't. Clamp off the fuel line and remove the carb bowl and clean any accumulated gunk, spray all holes, cracks and crevases with carb cleaner, clean the bowl nut, I use the wire from a twist tie to clean the tiny hole near the top. Refer to the pic below. Have a good one. Geo
[ATTACH=CONFIG]4339[/ATTACH]
 
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  #6  
Old 10-14-12, 05:28 PM
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Geo,
I did what you suggested but still no luck.
I'm planning to replace the carburetor.
by the way, I saw people sells the cab repair kit. should I just order the repair kit or replace the whole cab?
thanks!
 
  #7  
Old 10-14-12, 06:15 PM
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Are you sure you got the bowl nut clean, 2 holes through the bottom, one down the center and the tiny almost invisible one. IMHO, a kit will not help as it consists of a inlet seat, needle, float, bowl gasket and main jet, none of which is your problem "if the bowl nut" is clean. Have a good one. Geo
 
  #8  
Old 10-15-12, 06:13 AM
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Geo,

Yes, I clean all the holes on the bowl nut include the tiny one by needle. But I didn't use cab cleaner to spray. I will buy it from auto store and using it again tonight.

Do I need to take the bowl out and clean the bowl?

Thanks.
 
  #9  
Old 10-15-12, 06:42 AM
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The gas is about 3-4 month old. Should I drain it and put fresh gas in?
Thanks.
 
  #10  
Old 10-15-12, 08:35 AM
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Yes you should get fresh gas & use stabilizer I prefer the Briggs & Stratton brand. It would also help if you would post ALL of the engine numbers so we could see what carb you have.

But look here:

Disassembly, Cleaning and Repair of Tecumseh Series 1 Emission Carb 640084B

or here:

Disassembly, Cleaning and Repair of Tecumseh (Lauson) Series 3 Carburetor 632334a

for better info on Tecumseh carburetors
 

Last edited by aj-allen; 10-15-12 at 08:37 AM. Reason: add link
  #11  
Old 10-15-12, 01:01 PM
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Below are all I can find on the engine.

Engine Model: HMSK80 155530S (D)
D.O.M: 4171 R

I found the carb from the link below but not sure it is the one I need. Thanks.
Tecumseh 8hp 9hp HMSK80 HMSK90 Snowblower Carburetor | eBay
Carburetor For Tecumseh 632334A HM70 HM80 HMSK80 HMSK90 Oregon | eBay
 
  #12  
Old 10-15-12, 01:07 PM
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Does anyone know how to find the part# of the carburator? thx
 
  #13  
Old 10-15-12, 01:16 PM
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carb number is 632334A

carb kit is 632347

I would not use an Oregon aftermarket carb only OEM & both of those links are aftermarket!!

The second link I posted above shows your carb for proper cleaning get a kit clean the carb & you'll be good to go.
 
  #14  
Old 10-15-12, 01:22 PM
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aj-allen,

Thanks. How about the link below from Amazon. It is NOT aftermarket, right?
Amazon.com: Carburetor for Tecumseh 632334a: Patio, Lawn & Garden
 
  #15  
Old 10-15-12, 02:08 PM
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It's a Rotary so it is aftermarket too. I have had nothing but problems with aftermarket carb's & aftermarket carb kits I will only use OEM. But I would clean the carb you have with an OEM carb kit. Of course this assumes that the carb you have is OEM. What are the numbers on the carb? Look Here:

 
  #16  
Old 10-15-12, 05:42 PM
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aj-allen,

I found these number on the carb: 1432F/4k
what is the carb part#? 1432 or 632334A?

Today when I used the carb cleaner to spay into the inlet where connects to the fuel hose, there are cleaner shoot out from the carb. there is an invisible tiny little hole...so there is a leak on the carb. at the point,I think I have to replace the carb.

Can someone pls provide a link for the correct carb I need to buy?

Thanks.
 
  #17  
Old 10-15-12, 07:10 PM
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aj-allen,

I can't find OEM part for my carb on the web:-(

could you pls let me know the link below is the replacement I can use? It stated this will fit TECUMSEH 632334A TECUMSEH 632334 TECUMSEH 1432. Do I need to buy the mounting gasket since it is not included?

Amazon.com: Oregon 50-642, Carburetor, Assembly Tecu: Patio, Lawn & Garden

Thanks!
 
  #18  
Old 10-15-12, 07:33 PM
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Is this the OEM carburetor I need?
TECUMSEH 632334A CARBURETOR. OEM.REPLACES MFG 1099,1432 | eBay

Thanks.
 
  #19  
Old 10-15-12, 07:44 PM
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mrong,

The number on your carb proves that it is a Tecumseh OEM carb part number 632334A. Oregon 50-642 is the correct aftermarket carb so the second link in your earlier post, the rotary carb or the last link are correct. I would contact a local dealer and order an OEM carb it will be much more expensive though. Or see if a local dealer would check out your carb.
 
  #20  
Old 10-16-12, 11:31 AM
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aj-allen,

I got a Tecumseh OEM carburetor from a local small engine shop for $97 and will replace it later today. The guy sold me the part told me it is pain on the butt to adjust or rebuild it later on aftermarket one coz they are made differently from OEM part.
Also, When I looked at the new part, I saw a little tiny whole on the metal piece of the carb. and I believe that is what I thought was a leak yesterday.
I will play with my old part a little bit today before replacing it and let you guys know the outcome.
Thank you for helping me:-)
 
  #21  
Old 10-16-12, 11:40 AM
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Also, The small engine shop charges $45/hr for labor + $ for part + $40 for transport. So I just bought the OEM part and replace myself.
 
  #22  
Old 10-16-12, 12:18 PM
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Make sure that you take pictures before you take it apart!!
 
  #23  
Old 10-16-12, 12:39 PM
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aj-allen,
Yes, I will take lots of pictures:-)

I will check if the fuel hose directly connects to the gas tank is clogged(not the one run thru the primer). It is unlikely but I should check it at very beginning......

Thanks.
 
  #24  
Old 10-17-12, 07:16 PM
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aj-allen,

I replaced the carb today and my snowblower runs great now. I did adjust the jet little bit to make it run smoothly. I drained the gas in the carb afterward and closed the gas line. There will still be 2 more month before the winter comes this year. Do you think we should drain the tank or let it run out of gas?
thank you very much for all you have done to help me!
 
  #25  
Old 10-17-12, 07:32 PM
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Good work! You should use a stabilizer It should be added to the gas when ever you buy new gas as it won't make bad gas good only keep the gas from going bad. I prefer the Briggs & Stratton brand. Than turn the gas back on & start the engine turn the gas back off & let the engine run out of gas. Leave the tank full.
 
  #26  
Old 10-18-12, 05:30 AM
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aj-allen,

Thanks a lot ^0^
 
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