RPM Issue on Husqvarna 150BT Gas Leaf Blower

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Just got done replacing the carb on my one 150BT and it was running extremely rich at full throttle opening.. Pulled plug after a few minutes and it was coked up. It would not reach the full RPMs and air flow was inadequate. I had to adjust the needle valve lever to get it to reach higher rpms. It took three times to get it to a decent running rpms but the transition from low range to high speed was bogging down. It took a fourth time of bending the lever until that was corrected. No high speed needle adjustment is a pain to deal with. I suggest if the OP just got the blower to take it back to place he bought it from.
After trying the lever adjustment I noticed a small screw on the aftermarket carb that the OEM didn't have. And guess what it is a high speed mixture adjustment. A few seconds later I was able to increase the airflow and high end speed,

This is the one I got from Amazon. It was a little more expensive than most of them on Amazon.
https://www.amazon.com/dp/B09NC2FBFR?ref=ppx_yo2ov_dt_b_fed_asin_title
 

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Just got done replacing the carb on my one 150BT and it was running extremely rich at full throttle opening.. Pulled plug after a few minutes and it was coked up. It would not reach the full RPMs and air flow was inadequate. I had to adjust the needle valve lever to get it to reach higher rpms. It took three times to get it to a decent running rpms but the transition from low range to high speed was bogging down. It took a fourth time of bending the lever until that was corrected. No high speed needle adjustment is a pain to deal with. I suggest if the OP just got the blower to take it back to place he bought it from.
After trying the lever adjustment I noticed a small screw on the aftermarket carb that the OEM didn't have. And guess what it is a high speed mixture adjustment. A few seconds later I was able to increase the airflow and high end speed,

This is the one I got from Amazon. It was a little more expensive than most of them on Amazon.
https://www.amazon.com/dp/B09NC2FBFR?ref=ppx_yo2ov_dt_b_fed_asin_title
I don't know how to reply to everyone who offered suggestions so please see my last comment where I post the solution.
Thanks for your help.
 
he said it was new, but then again should have picked up on plugged exhaust too- as lots of people call "their" stuff new when it is in fact 2+ years old with 20 tanks of fuel ran through it. i presume it is under a month old with only a tank or two of fuel used
I don't know how to reply to everyone who offered suggestions so please see my last comment where I post the solution.
Thanks for your help.
 
Problem solved. After viewing a few videos I found out where the high speed adjustment screw is located. It's accessible without removing anything but I removed the carb to get a better view. Instead of seeing a slotted screw there is a round piece of plastic with tiny grooves around the edge. Apparently Husqvarna designed this so it has to be adjusted with a specialty tool by them or a dealer. To overcome this I ground down a cheap set of needle nose pliers which fit tightly into the little hole with the plastic adjustment cap and was able to rotate it a 1/4 turn. That did the trick. It ramps up quickly and runs at full throttle with a lot more air moving now than at 3/4 throttle.
My 150BT was factory tuned way too lean which probably would have scored the piston. I found a lot of complaints similar to mine and hope this thread will help someone else. Now I'm wondering if anyone makes an aftermarket tool for this?
I apologize for the way I responded to everyone, and If I missed anyone. Thanks again for everyones help.
 

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Amazon sells them. Husky didn’t want to make it like that with special screw. EPA and c.a.r.b. did.
 
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