User Manual

ZeRO-D SYSTEM
The ZeRO-D is a revolutionary system that combines the Feather Striker and Mass
Flow Valve to achieve a low operating pressure. This gives the KD-II an unparalled
shooting profile for a Stacked Tube Blow Back (STBB) Marker.
The ZeRO-D System is designed to reduce the mechanical recoil of the marker by
balancing the output pressure of the inline regulator with the timing of the valve.
ZeRO-D SYSTEM ADJUSTMENT
1: Insert 3 mm allen wrench into the ZeRO-D Adjustment Screw (Z031).
2: Turning the ZeRO-D Adjustment Screw clockwise will increase the ZeRO-D spring tension and
decrease valve timing.
increase valve timing.
3. Turning the ZeRO-D Adjustment Screw counterclockwise will decrease the ZeRO-D spring and
NOTE: Increasing the valve timing will decrease air efficiency, but will also decrease
the amount of mechanical recoil experienced.
RESET ZeRO-D SYSTEM TO FACTORY SETTINGS
Unscrew/Screw the ZeRO-D Adjustment Screw (Z031) to be flush with the
ZeRO-D Housing (Z041).
Turn the ZeRO-D Adjustment Screw (Z031) clockwise 2 full turns.
If there is a C-Clip, turn the ZeRO-D Adjustment Screw (Z031) counterclockwise till it meets
the C-Clip.
ASSEMBLY AND CLEANING THE MARKER
WARNING: Never remove the internals of the marker while the tank is attached
to the marker. Always remove the loader, the air tank, and all paintballs from the
marker before disassembly.
1
3
2
PULL THE TOP COCKING KNOB
COUNTERCLOCKWISE THE END CAP
TO LET THE INTERNALS SLIDE OUT
Turn the End Cap Counterclockwise to access the internals
CLEANING AND DISASSEMBLE REAR INTERNALS
1. Lift upward on the Top Cocking Knob at the rear of Delrin Bolt.
This will let the Delrin Bolt (P041) slide out from the rear of the receiver.
2. Turn the End Cap (A051) counterclockwise. This will let the End Cap and the
marker’s internals to slide out from the rear of the receiver. Remember to place
the marker in the de-cock position and place light pressure behind the End Cap
during the removal of the End Cap, this way will prevent the internals to spring out.
3. Slide the Feather Striker (P021) out of the rear of the receiver.
4. Once all the internal parts are removed, use a squeegee or barrel swab to clean
the inside of the receiver and use a towel to clean the dirt or paint off of Delrin bolt.
Apply some Azodin lube on the Striker O-Ring and striker regularly.