Have he parts manual and was looking at the part #671565682 set collar. It says qty 4. I assume that's four all 4 wheels. Found the part and it looks like a half ring. A little confused on how it works. Wanted to get all the parts I might need before taking it apart for repair. Any help?
Your part number is lacking 2 things:
#1 a number is missing from your part number, it's a 5 digit and 5 digit, letter and / or number combo
#2 it's always in this format XXXXX-XXXXX
That is for 2 each side on the front wheels only.
And as Kubotasam pointed out you only need them if they are broken or missing.
Did the wheel fall off?
If no, then you probably don't need them.