If your trimmer has a WALBRO or a ZAMA carb, try starting your adjustment at 1 full turn out. If you are having to run with the choke 1/2 on, then you will more than likely need a carb kit (Diphraghms & Gaskets).
If so, get me the series & model # of the carb & I can tell you which kit you need.
I am a current oldtime HOMELITE dealer with an extensive inventory of NEW, NOS & USED parts.
Check or credit card thru PayPal at
https://www.paypal.com/ Shipping is free for parts over $50 within the contintal US...Will evaluate any others
I accept Money Order or PayPal:
Bill Walcott
Brauchi Bros Inc-almost 50 yrs with HOMELITE
700 N 12th
Marysville KS 66508 USA
785-562-3539