Each string is replaced individually, yes. It is a pretty quick procedure, you pull the worn string through to the center of the hub, then slide the new string in, give it a tug to seat it in place, then you are ready to go. We supply you with 100+ sections of string, and you can always order more through us. As for the email, it is strykerwelding@embarqmail.com. Embarq, not embarg. Thank you for the comments/questions!
Hello, thanks for your interest. We apologize for the long delay in response. We have been very short on help. Unfortunately we do not have an edger at this time. We suggest to put the residential model trimmers, as well as the 16s the commercial model onto any zero turn above 48" deck. With decks smaller than 48", it is too tight of a fit. DMT