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Needs some advice for my auger.

bobber_down_1979

By bobber_down_1979
in Ice Fishing

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bobber_down_1979 Collaborator

bobber_down_1979

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So I have this old-school set-up that I inherited from my dad. The auger ran great last year. First year it was used in probably about 15 years. I don't want this thread to necassarily be about what type of gas use. Long story short I think using the new "Oxygenated" fuels in it did me no favors. When I pulled it out, it started OK, but you could not give it full throttle. it would kill out. I cleaned the carb out real good, and now it runs better, but after about 10 seconds full bore it stats to kill out and you have to let up. I am tinkering with the carb adjustment screws but can't seem to figure out how to operate it. The top screw is the idle, and I can't seem to figure out what the bottom two are for. In the end, this may need more than a simple "adjustment", but it would be good to know what the adjustments are for. I meant to paste photos to this post, but I guess you will need to click on the facebook button. facebook facebook facebook

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Surface Tension Grand Master

Surface Tension

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Look close at the mixture screws. You'll see an L and an H

L is low speed mixture. H is high speed mixture. Since the auger starts and idles don't touch the Low speed mixture

If your bogging at high RPMs it is either your running a little rich or your running a little lean. An ear that knows the difference will be able to tell. Since you don't know then you'll experiment. If it quits take that as the engine is starving for fuel at higher RPMs.

If it bogs that is usually to rich.

Turning the mixture screw in ( clockwise will lean the mixture. Turning the mixture screw out will richen the mixture.

In this case you want to richen the mixture. If you has a third hand this would be easier. I can do this under load but for now turn out the H speed mixture screw 1/8th turn. Give it a go. Improvement? Then go another 1/16 turn. Get it dialed in.

Worse? then then back the mixture screw in 1/8th turn the continue with 1/16 turns till you get it dialed in.

Now next time your on the ice fine tune it while drilling a hole if you don't think its running quite right.

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jBohmer Community Regular

jBohmer

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If your bogging at high RPMs it is either your running a little rich or your running a little lean. An ear that knows the difference will be able to tell. Since you don't know then you'll experiment. If it quits take that as the engine is starving for fuel at higher RPMs.

If it bogs that is usually to rich.

Turning the mixture screw in ( clockwise will lean the mixture. Turning the mixture screw out will richen the mixture.

In this case you want to richen the mixture. If you has a third hand this would be easier. I can do this under load but for now turn out the H speed mixture screw 1/8th turn. Give it a go. Improvement? Then go another 1/16 turn. Get it dialed in.

Worse? then then back the mixture screw in 1/8th turn the continue with 1/16 turns till you get it dialed in.

Now next time your on the ice fine tune it while drilling a hole if you don't think its running quite right.

This is why I love this site.

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Surface Tension Grand Master

Surface Tension

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If it starts good in cold weather then turn your idle set screw out(counter clock wise). Not the L mixture screw. If it is hard to start in cold weather, having the L mixture too lean will make the engine idle higher and because it is lean will make for hard starting in cold. Make sense?

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bobber_down_1979 Collaborator

bobber_down_1979

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Went out to look at my machine and the screws are not labeled. At least not any more. If you look at the photo I posted you can see that the screw to the right (which is to the outside, or towards the air filter) is bigger than the one on the inside (closer to the block). Is the bigger one going to be the fast mix, or do I need to find a manual or other resource?

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McGurk Grand Master

McGurk

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I have been trying to find the adjusting screws on my strikmaster lazer. I removed the air filter and looked but could not find them. Do I have to remove the gas tank to find them. Thanx. B.H.

There are not "mixture" screws on newer SM 2 hp Tecumseh auger carbs (unsure of the new solos). If yours is 10 years or older (or so) it might have them. Anything newer will have a low speed (idle) screw which just adjusts the lower limit of your linkage, and a governer screw which they do not want you to adjust. No carb mixture screws, though.

Like I stated earlier, try the simple stuff first. Definitely a plug, and if you get it running, add some seafoam into your mixed gas and let it run.

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