How to tell where to correctly connect what fuel line on a weed eater, trimmer, leaf blower or edger

RYOBI Fuel Line and Primer Bulb Tune-Up Kit AC05RYFL - The Home Depot

Blower Repair - Replacing the Fuel Lines (Weed Eater Part # 530069599)

SKIL 40V 14 String Trimmer with Leaf Blower Combo Kit with Standard Charger CB7478C-11 - Acme Tools

Where Do I Start? Essential Yard Tools for a First Time Homeowner – SENIX Tools

This itsy bitsy timing belt on a 4 cycle weed trimmer. : r/Justrolledintotheshop

Troy Bilt TB685 EC Fuel line layout with Diagram

ryobi bp 42 backpack blower carburetor fuel lines repair

4 cycle Troy Bilt TB635EC trimmer stalls at full throttle

Blackmax 2-Cycle 18 Straight Shaft Attachment Capable String Trimmer