When you screw the coupling together or take it apart, be sure to align the frame in a manner that allows the nut to turn easily by hand. Turning the nut with the wrench should only be necessary for about the last 1/4 turn when tightening and the first 1/4 turn when loosening. Careful alignment will minimize thread wear.

Inspect the couplings frequently for wear or damage.

Tighten the nut with the spanner wrench to at least 35 foot pounds of torque. That requires at least 70 pounds force against the end of a 6" wrench. I typically tighten the nut as tight as I can get it (I don't think it's possible to over tighten the nut with our 6" wrench). Remember, the 35 foot pounds of torque is a minimum value and your cycle may require a higher torque value to keep the nuts tight.

Be sure to apply the force at 90 degrees to the wrench.

A doubled over cycling glove laid over the wrench will allow more pressure to be applied to the wrench. Without the glove, the narrow wrench may hurt your hand.