While you wait for answers, we may have found some information which could help you.
Click here for Trimmer Cut CableI have a Qulacast Hedge trimmer which runs but the blades are loose?
steel arm on qualcast diagram?
How can I mend my Qualcast hedge trimmer?
rewiring a qualcast hedge trimmer 380 ?
Replaced drive belt ?
Does the gear section need grease or lubricating?