Thank you for contacting the AnswerARMY.
Unfortunately we have no provisions for sending out parts and the size is not listed. The bolt can be purchased at any authorized WeedEater service center and some companies online.
To find your local authorized service center please use the website: http://www.weedeater.com
Same thing happened to me. Mine took a one inch 10-32 round head machine screw.
Don't you hate it when the users guide doesn't list the sizes making you pay more to go to the official parts suppliers?
Thank you for contacting the AnswerARMY.
Unfortunately we have no provisions for sending out parts and the size is not listed. The bolt can be purchased at any authorized WeedEater service center and some companies online.
To find your local authorized service center please use the website: http://www.weedeater.com