Help please, echo pas-225 head removal

ECHO 21.2 cc Gas 2-Stroke Attachment Capable Straight Shaft String Trimmer with Speed-Feed Head and Curved Shaft Edger Kit PAS-225VP

ECHO 21.2 cc Gas 2-Stroke Attachment Capable Straight Shaft String Trimmer with 17 in. Swath and Speed-Feed Quick Reload Head PAS-225SB

Carburetor Kit,Carburetor Fit for Echo Carburetor Carburetor Replacement Ultimate Reliability - Walmart.ca

PAS-225VP 21.2 cc PAS Combo Kit | ECHO

Adjustable SRM225 Carburetor for Echo GT225 PE225 PAS-225 SHC-225 RB-K93 SRM-225 Weed Eater Parts Rebuild, Easy-Start Trimmer Edger Carb with Tune Up Kit Primer Bulb

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Hipa SRM 225 Carburetor for Echo SRM-225 PAS 225 GT225 PAS-225 GT-225 SRM225 PE225 PAS225 SHC225 PPF225 GT225L SHC225S Trimmer Weedeater Parts Replace A021001692 RB-K93 Carburetor