Brand New Yard Machine idle issue - Snowblower Forum : Snow Blower Forums
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post #1 of 34 Old 12-29-2018, 06:41 PM Thread Starter
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Brand New Yard Machine idle issue

Bought a new 2018 Yard Machine model 31AH54TG500 28” 277cc Powermore engine snowblower. Put in new 91 octane gas with a mix of sea foam. It came with oil already mixed. Engine idles fine on full and half choke but when choke is off it is not a smooth idle. It runs semi rough without load. With load it runs fine on no choke but as soon as there is no load it goes back to the semi rough idle. Not sure what the issue can be? I’ve used it 3 times already. No problem starting it. Seems that it needs some fine tweaking to get the idle just right on full speed with no choke.

Any suggestions?
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post #2 of 34 Old 12-29-2018, 06:52 PM
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sounds like another case of " epa lean".

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post #3 of 34 Old 12-29-2018, 07:04 PM
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Welcome to the forum!

What does this mean? "It came with oil already mixed." Oil already mixed with what?

When you say idle, does the engine have an adjustable throttle, so you can speed it up and slow it down? Some snowblowers now run at a fixed RPM, without a throttle lever.

Either way, it sounds like a carburetor issue, like running lean on the idle jet, when the throttle plate is mostly closed (running with no load, even at high speed).

That seems weird for a brand-new machine, though. If it was older, I'd say you'd need to clean the carb, but that shouldn't be the case here. Did you just buy it recently? Or was it bought at the end of last season, and has sat with gas in the carb since then? That could make at least more sense for a dirty carb.

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post #4 of 34 Old 12-29-2018, 07:09 PM Thread Starter
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Sorry oil was in the engine when I bought it. Bought on Dec 2nd 2018 from Lowe’s.. Oil was not mixed with anything.
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post #5 of 34 Old 12-29-2018, 07:12 PM Thread Starter
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Yes engine has adjustable throttle.
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post #6 of 34 Old 12-30-2018, 08:18 AM
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not to knock your choice,but the problem starts with the word LOWES, unqualified people assemble the ope ,nothing is test run to catch any production line issues, before them being sold,

breaks down to your having to lug the machine to a mtd listed shop and have it set up properly, and to me that's a major shame for anyone to have to go threw, wish you lots of luck,
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post #7 of 34 Old 12-30-2018, 08:40 AM
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My old troy bilt Squall did the same thing

After living with it set at half choke for a while it came time to to do some experimenting

If you are handy, obtain a K&L Carb Jet Cleaning Tool and take out the pilot/idle jet and lightly ream it out with the smallest serrated rod that will fit through the jet's orifice.

Lightly meaning 2-4 passes and then reinstall and test. You want to feel the serrations grinding away at the inside of the jet.

Doing this will open up the hole and allow more fuel in and, hopefully, stop the surging.

It did the trick for the Squall.

https://www.ebay.com/i/163443446835?chn=ps

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post #8 of 34 Old 12-30-2018, 08:59 AM
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Quote:
Originally Posted by tdipaul View Post
If you are handy, obtain a K&L Carb Jet Cleaning Tool and take out the pilot/idle jet and lightly ream it out with the smallest serrated rod that will fit through the jet's orifice.

https://www.ebay.com/i/163443446835?chn=ps
.
For $10.59, same as a welding tip cleaner for $2 but has more wires.

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post #9 of 34 Old 12-30-2018, 11:13 AM Thread Starter
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Not to mention that the bozos at Lowe’s assembled the chute incorrectly... the chute would not rotate left or right... they did not put the washer and locknut on the bottom side of the chute assembly to properly secure it... they put it above the assembly so the chute was not properly secured. I fixed that already.

https://youtu.be/yUf35qBsp-U

Should I just follow the above video to clean the jets?
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post #10 of 34 Old 12-30-2018, 11:19 AM
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Quote:
Originally Posted by JLawrence08648 View Post
For $10.59, same as a welding tip cleaner for $2 but has more wires.
It sounded like you're saying the $10.59 cleaner has more wires, but I suspect I'm misinterpreting what you wrote.

At any rate, as you said, here's a welder tip cleaner for $2, which will do much the same thing, but helps keep your investment even lower, if that's useful.
https://www.ebay.com/itm/13-Welding-Tip-Cleaner-with-Stainless-Steel-Reamers-4-Welder-Soldering/311413289559?hash=item4881adb257:g:e~IAAOSwhCBbV8B K:rk:1f:0

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