While you wait for answers, we may have found some information which could help you.
Click here for Motor Works Turntrim & edge reflex 545?
My black & decker GL565 strimmer does not rotate?
How do I replace a broken drive belt on my electric Black & Decker Strimmer?
Black & Decker GL540 trimmer nylon cord unravelling how can I fix that?
Black & Decker GW250 leaf blower/vacuum Diagram?
Drive belt?