M20 SAE socket sizes

[47U]

17 minutes ago, M20F-1968 said:

It is best when you have taken a section of the airplane apart more than 2 or so times, and know what to, how to do it, and with what tools.  

There’s no substitute for experience.

[Hank]

3 hours ago, Yetti said:

The Harbor Freight O2 sensor socket will work on the spark plugs with a bit of grinding.     Snap on 3/8 drive sockets work without grinding.

I bought an aircraft spark plug socket from Spruce, sized to fit my Harbor Freight torque wrench. It cost more than the wrench . . . Watch for HF sales, I rarely pay full price there unless I need something immediately.