Yes I was sickened when I found the magnet missing! I purchased it in hopes of prolonging the engine life. Now I do not know when it will grenade.
This engine I believe is a split case small engine- no pan. I have reached out to WEN but do not expect they'll do much if anything.
I can only hope its stuck onto something and at most will cause a slight unbalance. It has likely run 40 hrs with it missing so hope it stays where it is. I just don't have time to tear into the motor.