Small Engines (Lawn Mowers, etc.): ryobi attachment weed eater, ryobi weed eater, question pool

Question
I was left this ryobi weed eater and the attachments and of course, the thing is out of string and I cannot figure out how to open it to replace the string.  please help!

Answer
Hello Denise:

Sorry for the Delay. This Question was Located in the Question Pool. There are Different Trimmer Heads on the Ryobi Products. I Suggest you Take the Trimmer to your Local Small Engine Service Center and have them Explain the Procedure for your Trimmer Head. Hope this Helps. I am Here if You Require More Assistance. Let Me Know What Happens, Please. Thanks.

Good Luck

Respectfully  

John