This is a video to show how to use a 21 mm socket (impact driver or wrench attached) to quickly and easily remove the burr. I did this to replace my M3 burr with an M2 burr. I feel this is a quicker and easier method than taking off the case and disassembling the motor assembly.

Things you will need to perform this method:
- 21 mm socket
- Impact driver with impact socket adapter (or just a wrench)

Note: the wing nut and the burr are reverse threaded so you will need to spin them clockwise to loosen. This is opposite to the adage "lefty loosey, righty tighty"

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