While we're waiting for this wonderful feature to be implemented, here's a workaround:
1.) Write "Check gear" on a post-it note
2.) Stick the note on your display
3.) ???
4.) Profit!

Yeah, I'm serious! I kept forgetting to gather soils for our FC gardeners, so I just put a post-it on my display as a reminder and it helped.

The game does remind you in BIG text in the middle of the screen to repair your gear when the condition reaches 10%. After that dung you should head straight to the repair NPC. Unless you forget. If so, see workaround.