We may have found other answers which could help you.
Click here for Qualcast Suffolk Punch Hellosteel arm on qualcast diagram?
rewiring a qualcast hedge trimmer 380 ?
How can I mend my Qualcast hedge trimmer?
how can i fix my qualcast 600w hedge trimmer?
How can I replace the cable on my Qualcast hedge trimmer?
Does the gear section need grease or lubricating?