I just finished replacing
(and testing) both left arms and motors. To fully disassemble an
MA2 (which is required if you
just want to replace the arms) you'll need: Torx T5, 1.5 and 1.0 mm allen bits (or a T6 bit), J0,J00 phillps, plastic pry tools, tweezers, a soldering station and moderate soldering skill.
Harbor Fright [sic] to the rescue.
"Torx Tamperproof Hex Key set" sku# 97469 or 94691
Folds and fits nicely in your case but is a pita to remove and replace the 40 or so screws with.
"Precision Screwdriver set" 97517 All the bits you need and a crappy pair of tweezers.
But my fav
is was the "19-In-1 Compact Cordless Screwdriver Set'" sku 56757
It's a tiny cordless screw driver kit with a perfectly placed led and all the right bits. Makes disassembly WAAAAAY easier. At ~$12 It's twice the price of the screwdriver set. But its $12 bucks!
Alas, after completing the repair, I found the driver is too fat for about 1/2 of the screws (could'nt fit in the space available). Still worked great where it fit. But that's alright, it'll work great on my reels. The folding Torx Tamperproof Hex Key set proved indispensable and will always be in
MA2 case.
The folding sets bits work great as-is, but I had to file the tip of the screwdriver kits T6 bit as its replacing the 1.5 mm allen bit. A little off the tip with a file and it's a
perfect fit. All that said, Harbor Freight has a fairly well deserved reputation for having crap tools so you don't want to go into the repair business with these tools, but they will most definitely take care of yours. The motors and led's require soldering the leads, so you'll still need a soldering station (or at least an iron). But DJI has REALLY laid the connections out nicely for easy access.
Mostly you want this page:
DJI Mavic Air 2 Teardown: What’s inside?
EXCELLENT very DETAILED tear down and pics of an
MA2
There's also very good vid from ifixit.com mentioned above (even has an xray!)
(and yep, it flys great after the repair from the
auto RTH fight with an Oak.)