I made a mistake installing the ATV
receiver hitch.
The star washer should've
been sandwiched between the Receiver and the ATV.
It came loose, even though I
re-installed the star washer where it should be. I thought about trying
some epoxy, but might just weld it on.
Mark,
It could be that the star washer's teeth won't bite properly because it was assembled the wrong way.
Use flat-nose or combination pliers to twist the "teeth" on the star washer , so that they will "bite" properly on both sides when assembled between the receiver and the ATV.