First look for owners manual. There should a section that has troubleshooting. If it's electric, maybe you need to change the filter or get a new starter. If it's gas, the filter also might need to be replaced.
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queendamama (2):
I have 2 B & D GH 1000 electric weed trimmers. Both broke. Still has motor sound but the spool doesn't spin. Tried later & same thing. What can I do? add a comment
Make sure the gas is really fresh. Replace the gas if it's been more than a few weeks. If it requires a gas/oil mix, make sure the ratio is exactly correct. Disconnect and clean the spark plug.