How to maintain your Sub-Tanks:

1. Remove sub-tank from the holder, leaving ti attached to the fork extend the live up so it is completely straight.
2. This allows the oil to drain back into the fork.
3. Remove the aluminum fitting that covers the scrader valve and then attach a bicycle pump to it. Give the pump one (two at the most) pumps this will force the rest of the oil back into the fork.
4. Remove the bicycle pump
5. Then take a screw driver and bleed the air from the sub-tank replace the aluminum cap the replace the sub-tank back into the holder.
This process should be completed after every couple of rides depending upon the rider.