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Dewalt 20V Max String Trimmer DCST920-Change the string?

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I have a Dewalt 20V Max String Trimmer DCST920 and I think something got jammed in the trimmer head. I have attached some photos of the head, as it is slightly different than the one I see online a lot. I removed all of the string but the spool inside the head casing will not make a full rotation. It stops at about a quarter turn in either direction and will not rotate any further. The head unit will make full rotation without any trouble. With the spool not rotating, I'm not able to load any new line. This trimmer is less than a year old and has not been heavily used. I would appreciate any guidance you could give me.


Thank you,








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I had the same issue with my 60 volt, I couldn’t figure out how to load it, so I looked it up on YouTube.

They all looked different!

Mine looks just like yours.

I did figure out a way to load it:

Align all the holes. You should see all the way through the head.

Stick a three foot piece of string through the hole and center it .

Rotate the head so the head retracts the string. Leave just a couple inches out.

Start the trimmer and bump the head. If it works as it should, you have wound it correctly.(iDK if you can only wind it one way or if I got lucky, but I did it correctly the first time)

Replace the small piece with a 10’ piece.

Sent from my iPhone using Tapatalk

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Thank you for your reply! I'm going to give it a try. I'll let you know what happens.

I have that strummer in your last photo do you see the notch in the guard you put a screwdriver in that and slide it in to a hole you line up to lock the head then you undo the head by hand it might be left hand thread like a Moyer saw blade I think but it’s easy to do

Sent from my iPhone using Tapatalk

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