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Blower is hard to start. What should the screws be set out to start and then adjust from there.

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Most all carburetors are designed to have the screws set at 1 1/2 turns out from bottom. It sounds like you may have a different problem. The screws typically stay put until you move them. But you can certainly give it a try.

Posted on Oct 05, 2010


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Carburator Hi / Lo Adjustments

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What is the factory setting for lowand high screws on 25cc craftsman blower

If the two screws are side by side, one is the high speed mixture screw and the other is the low speed mixture screw. To set the high and low adjustment screws, tighten the screws in until they stop, don't force the screw after it stops. Back each screw out 1 1/2 turns. The engine will start and run here if everything else is ok. Fine tune each adjustment screw by closing the screw off (CW) until the engine runs rough. Back the screw out (CCW) until the engine smooths out. Run the engine at full speed and adjust the high screw. Let off the trigger and adjust the low screw. Once the mixture screws are adjusted, you can turn the idle screw to adjust the idle speed. It can take some time getting it all adjusted.

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1 Answer

My brand new blower only runs on half choke setting and stalls when I move it to run setting

My name is Dane and I am going to assist you in solving your problem.

You will need to adjust the high speed setting on your Carburetor jet. Turning the screw out just 1/2 turn or so should do the trick. It is not so hard to adjust the Carburetor, however you do need a special tool that is very hard to get your hands on, in order to adjust the jet screws. They don't make many engines with plain screw heads anymore. The newer Carburetors are factory set lean so they can pass emission standards. If you have a local dealer, they should adjust the mixture free with a recently purchased unit or for a couple of bucks otherwise. I hope I've helped. Thank you! Dane

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Husky 125B blower, new right out of the box. starts, runs about 30 sec, bogs and quits. I'm guessing likely needs carb adjustment, but set screws are not regular slotted screws. Looks like it requires a...

My name is Dane and I am going to assist you in solving your problem.

You will need to adjust the high speed setting on your Carburetor jet. Turning the screw out just 1/2 turn or so should do the trick. It is not so hard to adjust the Carburetor, however, yes you do need a special tool that is very hard to get your hands on, in order to adjust the jet screws. They don't make many engines with plain screw heads anymore. The newer Carburetors are factory set lean so they can pass emission standards. Since you just bought yours, a local husky dealer should adjust the mixture for free. I hope I've helped. If you found this reply useful, please leave me some THUMBS UP, if you feel I

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1 Answer



The Idle screw should just touch the throttle lever to start, the low speed should be set at 1 to 1.5 turns out from lightly seated, and the high speed should be set the same. Final adjustments are made only after it has been warmed up. If you adjust before 2 minutes of use the mixture will be too rich.

Hope this helps

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1 Answer

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1 Answer

Can't keep my snow blower running under load, cleaned carb, but do not know adjustment procedure for a tecumseh 7.5 hp 15 year old snow blower

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Good Day.

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1 Answer

Have a toro power stage max model 826LE electric start, runs irre

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