1. Unfasten the hexagonal screw on the 510 connector with 2.0 mm

Allen Key to loosen it;

  • Unscrew the used tank tube off together with the bottom deck,

replace it with a new one;

  • Screw the new tank tube together with the bottom deck back to the

tank;

  • Fix the hexagonal screw on the 510 connector to tighten it.