Water Inlet Valve

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Brand:LG
Model Number:LRFCS25D3S
Main Symptom:
What happens & when: How do I make the connection between water inlet valve line and ice maker tube? There is a blue coupler on the end of the line attached to the water inlet valve. Part number AJU72911118

Error Code (if any):
Parts or tests already tried:
Photos / video link:

Are you referring to the John Guest coupling? They simply push on. You would take the icemaker line and press it into the coupler that is on your valve line. If I am not getting it, please send a picture.