Running Carb Dry - Snowblower Forum : Snow Blower Forums
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post #1 of 31 Old 01-27-2016, 09:34 AM Thread Starter
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Running Carb Dry

So it seems to be the consensus that when your done with your snowblower and want to store it for a few days, weeks whichever that you should turn it off by turning off the fuel shutoff valve and allow it to die that way the fuel is removed from the carb. Seems perfectly logical. My question is, do you turn it off when it begins to surge (IE its very low on gas) or allow it to fully die on its own. Reason i ask is because the LCT GEN III manual says to turn it off when it begins to surge to avoid engine damage. They also say before turning off the fuel valve to lower the RPMs to its lowest setting. Thank you!

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post #2 of 31 Old 01-27-2016, 09:48 AM
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It's not the consensus to do this *every* time you shut down the snowblower..there is no need for that. During the regular winter season, just shut it down normally, without running the carb dry..(that also makes starting it again easier, because there is still gas in the carb.) Thats perfectly fine and the "normal" way to do things..

The "running the carb dry" thing really only needs to be done one time a year, when you are storing the snowblower for the spring/summer/autumn, after the last use of the winter.

I dont believe it would cause any engine damage to allow it to run out of fuel..its running out of gas, but not out of oil, lubrication should still be fine.

One thing to consider though: small gas engines, like on snowblowers are lawnmowers, are designed to run best at FULL RPM's! full speed is better than slow idling, because the splash lubrication and the engine cooling both rely on full-rpm's to work properly..

Running at a prolonged slow idle is more of an issue for a summer-use lawnmower than a snowblower, because over-heating is less of a concern in the winter..but still, a prolonged slow idle is generally not a good idea..(we are talking 5 to 10 minutes or more..slow idling for a minute or less is fine.)

I would drain the tank as much as possible..then you are only left with fuel in the gas line and the carb..
start the engine..let it run at a fast clip until it starts to sputter..shouldnt take long at all..then turn down the idle slower until it sputters out and stalls on its own.
People have been doing it this way for 3/4 of a century..never heard of any problems related to it.

Scot


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Last edited by sscotsman; 01-27-2016 at 09:51 AM.
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post #3 of 31 Old 01-27-2016, 10:22 AM Thread Starter
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Appreciated.

2016 Ariens Deluxe 28 SHO AX306cc (921044) | Drift Cutters | Front Weight Kit | Handwarmers
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2016 Ariens Razor SP Mower AC159cc (911175)
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post #4 of 31 Old 01-27-2016, 10:38 AM
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Letting an engine die via shutting off the fuel will never hurt it. It simply runs out of gas. The oil is still being splashed in the crank case so its no issue.
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post #5 of 31 Old 01-27-2016, 11:04 AM
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I only run mine out at the end of the season. During the season, if we are lucky enough to get a two or more week long stretch without snow, Ill go and start it up just to get everything sloshed around a bit.

At the end of the season I pull the fuel line off the bottom of the tank and let the leftover fuel drain into a fuel jug. Replace the fuel line onto the tank then run a mixture of fresh fuel, Marine Stabil, Seafom and MMO for a few minutes. That way I know whats in the carb is mostly stabilized and "cleaner". This has worked for the 10 years Ive had my Ariens.....when starting for the next season it always starts on the first pull (provided I dont flood it!)
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post #6 of 31 Old 01-27-2016, 11:05 AM
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If you really want to get crazy you can also try to start it with the choke on to suck out the most you can and pull the fuel bowl and wipe it dry.

.
Make sure the windows are up before the snow plow goes by !!

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post #7 of 31 Old 01-27-2016, 11:07 AM Thread Starter
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Thanks for all of the ideas! I run MMO on all of my gas engines every fill up so hopefully keeping things shiny and clean!

2016 Ariens Deluxe 28 SHO AX306cc (921044) | Drift Cutters | Front Weight Kit | Handwarmers
1965 Ariens 10ML60D with 1970 10,000 Series Sno-Thro Attachment 10995 | Tecumseh H70-130216G (7HP)
2016 Ariens Razor SP Mower AC159cc (911175)
2016 Predator 8750 Peak/7000 Running Watt Generator 13HP 420cc (69671)
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post #8 of 31 Old 01-27-2016, 12:18 PM
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Quote:
Originally Posted by Kiss4aFrog View Post
If you really want to get crazy you can also try to start it with the choke on to suck out the most you can and pull the fuel bowl and wipe it dry.
I will actually slowly add choke as it starts to sputter and surge. Just keep adding enough choke to make it run smooth again. Eventually you will be at full choke and it will completely die.

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post #9 of 31 Old 01-27-2016, 12:22 PM
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Quote:
Originally Posted by Shryp View Post
I will actually slowly add choke as it starts to sputter and surge. Just keep adding enough choke to make it run smooth again. Eventually you will be at full choke and it will completely die.
exactly what I do
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post #10 of 31 Old 01-27-2016, 04:20 PM
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Me too Shryp, and every time also..........makes me feel better.... still waiting for snow. Four machines and no removable snow yet, I've never seen it like this in the 43 years I've had this house. ......
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