RPM Issue on Husqvarna 150BT Gas Leaf Blower

[Chevboy0167]

Found this... no longer available tho....

 

[thenne1713]

If unadjustable carbs designed for 50:1, why would anyone TRY to run a different 40:1 mix, as more oil= less gas= LEAN?

 

[Automender]

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