Thank you for posting this. You are a lifesaver. This is saved us probably $160 buying a new string trimmer.

You can't give people hope and then not step-by-step the solution. You need to make a follow-up video that at least removes the cover of the modified head you installed. You seem to have the same model I do, but Kobalt uses different approaches to the head assembly based on the model number. For instance the KST130x-06 actually had a replacement kit made by Shakespeare for a time (discontinued) but even though the trimmer looked like mine in every other way the head assembly was different so their kit wouldn't fit my trimmer KST 2540-06. So without you showing me what your trimmer looks like under the cover there's no way for me to know if your solution will work for me.

Followed your instructions. Replaced my old Kobalt string trimmer head with the Husquvarna T25. Thanks for the tip. Michael

My man....i was going crazy thinking I had to trash my trimmer because a plastic knob broke...this worked perfectly. Only additional thing you don't mention is to save and use original spring...t25 spring requires adapter....but it works perfectly again and Husqvarna actually sells replacement bump knobs...what a concept!

Thank you so much for making and sharing this video. My dad bought the same as Lowes told him he could buy pre-stringed replacement spools that stopped carrying in stock after he bought it. I bought the T-25 bump knobs to replace his worn one buy had to grind and sand the diameter down to fit the Kobalt housing right. After that experience I ordered the T-25 housing so replacement bump knobs would fit but I had read on Amazon it required “some modification” to work. It would have taken me hours to try to figure out how to adapt this but only a few minutes to complete after watching your video. *Although I would trust your 10mm washer method much more I didn’t want to make a trip to Ace if I could help it and found some kind of hard rubber plumbing piece that fit the 10mm hole diameter perfectly and just barely extended above that empty hexagon space and so far it works great but plan to pick up the washers later just in case the rubber part doesn’t last.

Thank you so much. I had lost hope. To others out there. You remove blue cap by prying it up with a flathead screwdriver. Follow the directions that come with the replacement head with the exception of the adapter and its replacement. Use 4 or 5 washers, old nut and old spring instead. Make sure you put the blue button on as far down as it will go. I didn't push it down far enough and spent far too much time muttering 4 letter words. :) Also to remove old assembly it helps to hold center screw in place with a flathead screwdriver while you turn assembly to remove it. Then drop the nut out of it so you can use it to attach new head. Good luck. You got this.

Thanks , easy fix with your video.Wore out two Kolbalt bump heads in two years heavy use.

I watched your video and did the change over however instead of using washers I drilled a hole in one of the fittings that came with it the same size as the shaft , then I ground the ends off and basically had me a hex head washer .It worked great.I loved your video it saved me the price of a new weed eater and when this head goes bad another 19 dollars and I'm good to go .....Thank you very informative video.

Would have been helpful to actually show removal of original head and assembly

What a legend. TY for the video. My Kobalt spool wore down and broke. If your spool head is in good condition the T25 Button Knob is a direct replacement for the original kobalt head. My outer cover was shot also so I went with this method and replaced it all.

BAM...You the Man! Thank you for sharing😁

Way to easy. Thanks for the video!! Took me 5 minutes to change out the head.

Great video...and a easy fix.. Thanks Mj

It’s a shame that kobalt. Replacement parts are so hard to find Iwould steer clear of them for the future..I am trying to find a spare replacement for my 80 volt string trimmer customer service sucks. Had the same issue with my 80 volt lawnmower blade. I always try to keep space parts for all my equipment ..kobalt has to do a better job of making parts available.

you can remove the old head entirely. Right behind the old head is a hole. Insert a screwdriver into that hole and rotate the head until you find the stop. The screw driver will slide into a slot and stop the head from rotating. Then you can spin off the old head. If it does not seem to work, try the other direction. I dont know if I was just confused, or the threads may be reversed. The new head fits right back on the same shaft. I just did it with my weed eater and I didnt need any extra parts. Then I finished a section to test it. It worked out great, and like Philip said, the new head will work better in the long run.

Philip, I just did the replacement for my KOBALT 40v model: KST 130x. Thank you kindly for your video & suggestion!

Like a few other, I drilled out the T25 hex nut to fit over the Kobalt bolt. Thought I solved the problem but found a new one. The problem now is the square Kobalt nut backs itself off the threads while using and the trimmer head comes completely off

There is one issue you did not explain..what parts do you leave under trimmer base to make it stable?

Am I not supposed to put the spring around the square bolt

Thank you for taking the time to post this. My original kobalt head exploded last week. Neither the Kobalt or Lowe’s hotlines picked up my call. I was ready to toss my trimmer into the trash, because like you said, there’s no other suppliers. This took me just 30 minutes to replace. The two companies’ heads are nearly identical.

Thanks, Phil

Why didn't you show us how to take off the old head???

Your right. Thanks

I have an issue with bump feed sticking, does this mod cut down that issue?

Thanks for the help.

You need to bang it on a hard dirt or grass surface and you will notice that this particular T25 Husqvarna Head should last you quite a while,good video Regards

You are a godsend.

You are golden thanks

Thanks for the hack! Saved me $120. Works great

Thank you. I had the same problem and your solution worked.

ok this went waaaay too easy following the video and everyone's comments... I just hope it doesnt blow up on me as usually these things take me a lot longer to troubleshoot and fix... so keeping my fingers crossed. My son is coming over today to cut the grass and will try it out. will update later. one thing I will say as far as the design of this vs the stock Kobalt head...this seems much improved and easier to reload...

good deal

Need my 3 minutes back… your supposed to show how to replace it. Not just show us a couple of parts and talk

How do you get the shaft off

What am I missing? The main bolt seems to be too large to fit anything.

I recently solved the mystery! The works brand that Lowe’s sells has two sku’s, one of them fit perfectly on the Kobalt. They are only $6. Order both if not sure and send the one that doesn’t work back. You have to order online, and I picked up in store. Mystery solved for $6.

How do you get the blue part off?

Just tried this. Got the 10mm washers put them in and did not move freely. The T25 and the Kolbalt heads are different. The t25 is rounded on the bottom. The Kolbalt is"lifted" up so there is no friction. I put the t25 on and won't move freely. Even tried a washer under there as well as took the round plate off the kolbalt one(attached by 4 screws) and put it on the t25 to no avail. Looks like i may have to pony up for a different weed eater. Any recommendations. One that is batter operated and has parts?

You never showed how to get detach the old one. 😶

When its time to replace the line, or trimmer head throw the unit in the garbage, it'll be less aggravating.

why the whispering?

I'm at full volume and can barely hear you...lol

Very, misleading! Did not show removal/replacement of head, just talking.