Reese Towpower 70142 Manual De Instrucciones página 8

With coupler locked onto a 2" ball, tighten the locknut until all parts
1.
are clamped solid. Do not overtighten. Just tighten enough to fully
compress the helical spring.
2. Back locknut off ½ to ¾ turn.
3. Check for proper couple/uncouple operation.
COUPLER ADJUSTMENT