20 Most Recent Black & Decker String Trimmer Cordless 12" 18V - Page 5 Questions & Answers

You can recharge the battery at any time. I usuly use mine then when done using it I put it back on the charger so I know it will be charged the next time I need it.

It sounds like you may need to replace the head. It is designed to advance and stop, but your's isn't stopping. Try this: Clean the inside of the head and connection to the machine well. Put some graphite inside the spool and where it connects to the machine; be generous with the graphite. Put the head back on with some line properly wound onto the spoo (note arrows on back of spool). With the machine off tap the head on the ground enough to disperse the graphite thoroughly in the head. Now, push the head as though to advance the line, and pull on the line. If it advances a little and stops, it is working. Do this several times to be sure. If you can get it working like this, you're good to go. If not, replace the spool. Even with the new spool, occasionally put some graphite in it to keep the line advance smooth!

Best regards, --W/D--.....Please feel free to rate this solution. Thanx!

Check the gears for defective or worn teeth and make sure that the belt tension is correct. If the belt is loose it will shed its teeth immediatly.

Yes possibly, but hard to find. I did find the operators manual for a model close to yours. It is right here:
http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/Brazil/GL300%20ty2.pdf

Here are the operating instructions. You will need Adobe reader to view this, it is a PDF file.
http://www.blackanddeckerservicenet.com/documents/English/Instruction%20Manual/90563737,LST1018.pdf

Test the charging unit with a voltmeter and compare the result with the stated output on the case of the charger. Do the same with the batttery. Neither is going to shock you and hurt you. B & D have a website where you can probably find out about ordering any available replacement chargers and batteries.

If you have a voltmeter handy, then plug the charger in and test the terminals on the charger with the leads on the meter. The output of the charger should match what is stated on the side of it.

These little electric machines have an automatic line feeding system. Do not bump the trimmer head on the ground attempting to make line advance. If the line advance is not functioning like it should, then the string head should be removed and the spool inspected for snags and tangles.

We are glad you can remember so here is a link for B&D electric trimmer manuals:
http://lawnandgarden.manualsonline.com/manuals/mfg/black_decker/black_decker_trimmer_product_list.html
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