My blower will only run between choke and half choke setting. Are you aware, where I can get the tools to adjust high / low fuel air mixture or how I can fix my problem. I have cleaned carby etc, but still the same problem. thanks Adam

It's not the idle screw... it's the high and low fuel/air mixture screws that need adjusting. The two screws are next to each other on the carburetor and they look the same. Gently turn both screws fully in (clockwise) and then turn both out one and a half turns out. The machine will start. the screw nearest the centerline of the machine is the low speed screw.. keep adjusting that screw until the machine idles... Then adjust the high mixture screw while holding the trigger down... then adjust the idle.

Either your carb is still dirty as in has clogged jets or passages, bad diaphragm in the carb or you have the air/fuel needles way out of adjustment. Google what type of motor you have and how to set carb. Or even get a manual, that would be my advice. Also make sure you don't have to much 2 stoke oil in your fuel mix.

This is a tell tale sign of a lean fuel mixture. By choking the unit you are manually creating a richer fuel mixture. I would purchase a compression tester from a local parts store and check compression. If that's ok, I'm willing to bet the problem is still carb related. Two stroke carbs are tricky to clean because of high/low ports that are one way and sometimes impossible to clean. Did you remove high and low needles when cleaning carb? Another trick is to mix seafoam with your gas, then mix two cycle oil to proper ratio. Use 2 ounces seafoam to one gallon of gas, then mix two cycle oil to proper mix. Hope this helps! Good luck and happy wrenching!

I’m happy to assist further over the phone at https://www.6ya.com/expert/layne_0fccff498c319c32

back out low side air/fuel srew the one closest to the motor 1/2 turn at a time also check carb to motor gasket

When you go from full choke (rich air/fuel mixture in carb) to half-choke (leaner air/fuel mixture), you are requesting the engine to do more with less. This is a very common problem. You say it dies out. It is probably at that point dying out "lean" with a lot of air and not very much fuel. Several things can cause it to die out. Bad fuel filter in gas tank, debris in the carburetor fuel inlet screen (small wire mesh filter)...or it could just need the L mixture screw adjusted which afftects how rich/lean the engine is at startup. Since it is dying lean, I suggest turning the L (Low speed) mixture screw counterclockwise to increase fuel flow at startup. Turn it about 1/4 of a turn. If this allows it to keep running, then good. The L and H mixture screws have unconventional heads on them that require a special tool, but you can make your own with a small 22 gauge automotive-type female spade connector. Just tap it down onto the head of the L screw (one closest to engine below the idle speed screw) insert a flat blade screwdriver, and you should be able to turn it. If adjustment does NOT help the dying problem, then the installation of a gasket and diaphragm kit is probably the next step. Good luck, and you are not alone, there are hundreds of these machines that do this.

It sounds like the air fuel mixture screws are set too lean, which means that the engine is getting too much air not enough fuel. It runs with the choke on because the choke restricts the air that is allowed thru the carburetor. You will need to locate the two small adjustment screws. It will be much easier if you secure the saw in a vise of some sort making sure that the chain can move freely. With the engine running, slowly turn the air mixture screw clockwise and the engine should begin to die. At this point you will need to begin to open the choke because you are richening the mixture. Very small increments will make alot of difference so move a little at a time until it runs without the choke. Then make your adjustments to fine tune using both adjustments at low rpm and at high rpm.

Idle settings isnt fine, Or fuel filter is old. Maybe 10% problem with carburator - is faulty.

adjust the carb. the fuel air mixture is messed up. try adjusting both screws to the right

your mixture screws probibly have to be adjusted.i have a homelite weed whacker and homelite leaf blower.
both had to be adjusted after i used them 6 or 7 times.theres a tool you can buy to move the screws.or you can be cheap like me and use a dremal tool with a cutting wheel on it and cut slots in to be able to adjust with a flat head.
turn the screws clockwise til there just seated,not too tight.then turn each one out counter clockwise to 2.5 turns and start adjusting from there.the first screw is the low setting and the second is the highs. i usally start with the highs.but u can do what you want. u can also youtube on how to adjust.

If you have the TB2BP EC Troybilt backpack and it bogs down or begins to stall out at full throttle with choke in FULL OPEN try the following:
1. Do the simple stuff first, Check spark plug, air filter and clean or replace if necessary.
2. Remove air filter cover, open choke and spray out the carb with carb cleaner.
3. Inspect carb and look for a flat surfaced screw with a small V notch on the side of it. It will be on the top side just forward of where the fuel lines connect. If you find it don't waste any more time looking for the High and Low fuel adjustment screws (there aren't any) this is the only adjustment other than the throttle adjustment screw you'll find.
4. Start your blower allow time for it to warm up and advance choke as far open as you can without stalling motor (mine just suddenly wouldn't run in anything other than full choke).
5. With motor running, adjust the screw to improve operation. Depending on your initial choke setting you may have to adjust, open choke to next position and fine tune.
6. Note- clockwise reduces fuel to carb, while counter clockwise increases it (if it's stalling when you attempt to throttle up it's starved for fuel) I'm sure there's a tool designed so that some tech can charge you 100.00 to turn the adjustment screw 1/4 turn but I found that a pair of fine needle nose pliers did just fine. Pay attention to original position of the V notch and what adjustments you make ( I tend to make 1/4 turns and fine tune from there) so you can always go back to your starting point. Note I'm not a technician so I can't say this the fix for your machine but it worked on mine.