How can you replace the cutter unit(trimmer blade) on BG7025 groomer?

@jackattack40028 post some good pictures of your broken area. Let's see if we can narrow it down. For now, you do want to take a look at this video around the 4:40 mark for the trimmer.

While you work on your trimmer, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!

Adding images to an existing question