• Because Lezyne pumps screw onto the valve, you pump the tyre up, unscrew the pump and it unscrews the valve core with it.

    Pressing the little button on the side didn't work?

  • I've got one of the older micro drive HPG which doesn't have a button, but not sure it'd make a difference. I used an adjustable spanner to tighten the core up, was wondering about whether I should use blue Loctite but managed to do without, not sure what it'd do if it dripped onto the tube.

About