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Adjusting snow blower carb in summer? #4483271
08/09/17 02:45 AM
08/09/17 02:45 AM
Joined: Oct 2010
Posts: 951
South Eastern, CT
AMC Offline OP
AMC  Offline OP

Joined: Oct 2010
Posts: 951
South Eastern, CT
I am currently restoring an older Simplicity 1080S snow blower I found locally for $150. It was in fair to good shape, ran and started OK but I still wanted to restore and refresh it. After ordering a few parts, I started tearing into it over the last few weeks.

Fast forward to yesterday, I replaced the fuel hose, filled the tank and fired her up. I let the engine run at full throttle for a while and without a second thought, adjusted the carburator until it ran perfectly. It roars smoothly and idles correctly now but I adjusted the carburator when it was 90 degrees out. My question is, is this thing even going to start when I try it again at 30 degrees? Does outside air temp really make that big of a difference when adjusting an old, fully adjustable carburetor? I am hoping a slight adjustment for the colder weather is all it will need come winter.

The engine is a pretty standard 10 horsepower Tecumseh snow king. Here she is, I think I got a nice machine for $150. Thanks!




18 Honda CR-V - Mobil-1 AFE 0w-20
17 Ram 1500 SLT - Napa Synthetic 5w-20
14 Yamaha Super Tenere - Mobil Delvac 15w-40
Re: Adjusting snow blower carb in summer? [Re: AMC] #4483296
08/09/17 04:51 AM
08/09/17 04:51 AM
Joined: Jan 2009
Posts: 2,542
wi
dave123 Offline
dave123  Offline

Joined: Jan 2009
Posts: 2,542
wi
I always had to go back in winter and re adjust the carb you'll be to lean for winter and almost surely once you get a load on it.

Last edited by dave123; 08/09/17 04:52 AM.
Re: Adjusting snow blower carb in summer? [Re: AMC] #4483317
08/09/17 06:12 AM
08/09/17 06:12 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline

Joined: Jan 2007
Posts: 17,501
Clovis, CA
It will start up fine in the Winter, but you may have to dial it in to match the air density on that approaching Winter's day. Our modern computerized cars automatically adjust for air density.

Re: Adjusting snow blower carb in summer? [Re: Merkava_4] #4483355
08/09/17 06:58 AM
08/09/17 06:58 AM
Joined: Mar 2007
Posts: 915
canada
hemitom Offline
hemitom  Offline

Joined: Mar 2007
Posts: 915
canada
Should be fine ,only adjustment will be under load, ( i'm assuming it has the adjustment screw on the bottom of the bowl) thats usually how i did mine , cleaned the carb in summer and adjusted it , fine tuned in winter under load. Nice looking machine for $150 you did well !!


2010 ford fusion.
2014 buick verano.
2012 mustang coupe.
Re: Adjusting snow blower carb in summer? [Re: AMC] #4483401
08/09/17 08:08 AM
08/09/17 08:08 AM
Joined: Jul 2005
Posts: 31,686
NY
demarpaint Offline
demarpaint  Offline

Joined: Jul 2005
Posts: 31,686
NY
You can get it in the ballpark, but the best way to do it is during the winter when it is fully warmed up and under load. I run mine into a high pile of snow, with the auger turning, and make the final adjustments then. I found the machine runs better doing it that way.


God Bless Our Troops

Re: Adjusting snow blower carb in summer? [Re: AMC] #4483629
08/09/17 11:55 AM
08/09/17 11:55 AM
Joined: May 2006
Posts: 4,079
Central Wisconsin
dwendt44 Offline
dwendt44  Offline

Joined: May 2006
Posts: 4,079
Central Wisconsin
The Tecumseh carbs tend to plug up the low speed jet.(surging)
Good fuel, Stabil during storage and a shot of MMO now and then
will keep it running great.
Typically the high speed jet will have to be opened up some for
winter use.


There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.
Re: Adjusting snow blower carb in summer? [Re: demarpaint] #4485227
08/10/17 10:45 PM
08/10/17 10:45 PM
Joined: Oct 2010
Posts: 951
South Eastern, CT
AMC Offline OP
AMC  Offline OP

Joined: Oct 2010
Posts: 951
South Eastern, CT
Originally Posted By: demarpaint
You can get it in the ballpark, but the best way to do it is during the winter when it is fully warmed up and under load. I run mine into a high pile of snow, with the auger turning, and make the final adjustments then. I found the machine runs better doing it that way.


That is what I wanted to hear. I was hoping it was just something simple like that. The low speed jet probably is a little plugged because it only idles with the choke on but I don't really care. The engine purrs along nicely at 25% throttle, just not all the way down at slow idle. I am hoping just using the machine and the constant dose of Gumout I add to my gas will eventually clean it out.

At this point, all the engine work is done and I am in the process of lubricating everything. Once that is done, I am going to change both belts and all the tension springs, adjust the linkages and put everything back together. Once it is back together she is going to get a heavy coat of fluid film all over everything and the gas tank is going to get filled with VP engineered 4 cycle fuel.


18 Honda CR-V - Mobil-1 AFE 0w-20
17 Ram 1500 SLT - Napa Synthetic 5w-20
14 Yamaha Super Tenere - Mobil Delvac 15w-40
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