To keep your Emag or Xmag happy, just keep it charged, cleaned, and oiled.
Before every day of play.
1. Make sure your battery is charged.
2. Take the barrel off.
3. Put about 4 drops of oil in the asa or input to the valve.
4. Air up the marker and cycle it at least 40 times.
5. Your done.
At the end of every day.
1. Wipe off excess dirt, paint, etc. from the outside of the marker.
2. Take the valve out and wipe off any dirt, paint, etc. that may have collected around the bolt area.
3. Make sure the inside of your barrel is clean.
4. Repeat the before every day of play steps(omit step one).
5. Your done.
Depending how often you play and how down n dirty you get, every now and then you should fully strip your marker down to clean collected dirt, paint, etc from anywhere it may have collected(then oil it). When taking out the Reg. Piston and Spring pack, regrease them using any quality grease, the grease is there to prevent rusting, not to lubricate.
It's very important to keep dirt and foreign debris out of the valve and air system. Some easy and effective steps are to use a good fill nipple cover and a thread saver cover if you use a screw in tank.
It's always a good idea to have a little kit handy with extra o'rings and other parts that may wear or ruin, or parts that may be easy to lose like the field strip screw or a battery saver plug.