Pre-Game Maintenance Checklist
by Mike Aberle

A simple Concept

Preparing your "luck": The Pre-Game Maintenance Checklist

You've been looking forward to a day of paintball. You've invested time, money, set aside other options, and would really prefer not to have problems plague your day. There is always the possibility of a random breakdown and bad luck. Fortunately, not all "luck" is random. Unless you're rolling dice, most luck is the result of what you do or fail to do. Most luck is subject to cause and effect that may be shown, graphically, as preparation vs. luck or the "luck curve".

The concept is simple. No preparation and your luck, on average, will be rotten. Prepare and your luck will usually be good. As the owner-operator of a private field, I've seen this principle prove itself over and over for years. So much bad luck may be so easily avoided. To guide you on your journey to better fortune, I've prepared a Pre-game Maintenance Checklist. Keep in mind that "pre-game" means far enough in advance to acquire any needed parts. Also keep in mind that, due to the nature of seals, air guns that worked perfectly when they entered the closet may not work weeks later when they come out.

The Pre-Game Maintenance Checklist: This checklist applies to most of the aspects of paintball in general, although focused on basic Autococker preventive maintenance. If you do not do the "A" items already and start doing them now, you luck will improve. If you play regularly at one field, the field operator and other regulars will notice the difference.

If you need more technical detail, refer to the 'Autococker Low Pressure and Teardown Guild' article on this site.
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A) Be sure you have all of your equipment in one place, preferably a container like a sturdy bag or even a cardboard box that may be carried in one trip.

1) Be sure your mask is in good repair, clean, and has no cracks in the lenses. You should never even consider playing paintball without a mask. (although you can play without a marker.)
2) Be sure all the major parts of your gun are there.
lock, stock, & barrel (yeah, it happens.) Detail on gun preparation later.
3) Be sure you have a snug fitting barrel plug.
4) Be sure your have your gas bottle;
................the bottle's o-ring is good;
................all the fittings you normally use are present and in good repair
5) Be sure you have your hopper.
...............Check that the elbow is good and will fit tight.
...............If motorized, check the motor by turning it on.
...............If motorized, be sure you have a extra (new) batteries. (The motor may run on an old battery and empty hopper, but lack power to push paint in a full hopper.)

6) Be sure that any loaders, harnesses, knee pads, squeegee, and other equipment that you commonly use are accounted for and in good repair.
7) Guys, don't forget your cup. Ladies, use breast protection. There is medical evidence that busted mammary capillaries today may lead to possible cancer years from now. Don't risk it.
8) Be sure you have extra o-rings and oil. (more on oil later.)
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B) Marker specific checklist: I've found my Autococker to be quite reliable. Still, there are things to check that may go wrong. These are commonly the old engineering nemesis of Loose, Leaks, & 'Lectrical.

1) Loose.
..............If your gun is new, check all the external screws to be sure they are tight. If they have remained tight for the first three days of hard play, they should stay tight. Do not over tighten them! Just check to be sure they are not loose. You will need a set of Allen wrenches from 1/16 inch to 3/16 inch. Available at most any hardware store for around $3.00 range.
..............If you have loosened any screws, check them for loosening.
..............Check "high stress" screws for loosening. These typically are the two screws that hold the bottom line feed on the trigger frame. If these are loose, you should soon notice your bottle will feel loose.
..............Cocking rod. Check this often. It may be good to start the habit of giving this rod a quick clockwise twist with thumb & finger on the way to start the next game.
2) Leaks. Because of the nature of seals leaking when they dry out, test your gun for leaks by airing it up the day before your paintball event. (Sometimes the valve seals will leak slightly on air - up. Usually, they just need a little lube. Firing the gun once or twice should cause them to seal.)
..............Before you gas up, drop 2 to 3 drops of silicon based oil into the gas inlet. This simple act will provide lubrication throughout as you use the gun. Lightly oil the bottle o-ring. This will prolong it's life. Repeat with each refill of gas. If you gun has not been fired for a couple of weeks, point the gun skyward and add a drop of oil into the 3-way valve's exhaust vent. Remember, this is before the gun is gassed up. Still pointing at the sky, stroke the trigger a few times. This will work oil directly onto the 3-way's o-rings without blowing the needed oil out with the exhaust. (See photos below)
..............Note: O-rings may have the same size but be made from rubber, nylon, urathane or other compounds. Most that are resistant to petroleum based oils tend to break down in a concentrated CO2 atmosphere. The Autococker manual recommends a light petroleum base gun or machine oil for seal lubricant and Vaseline for the bolt. I do not know what compound WGP uses on their seals. I have never used a petroleum based oil on the internal seals of my 99 'cocker, but do use Vaseline on the bolt and moving trigger parts. The two o-rings on the bolt are original and have not gone all soft & puffy like their nylon cousins would have done. I use silicon based oil on the rest of the seals with, after over two years of regular and often use, the original o-rings still do their duty in the two and three way valves.
..............I've never had trouble with the turbo valve. Although I've changed the valve for a higher volume (lower pressure) version, the original and its replacement has never given a moment of leaking.
3) Electrical.
..............Always check electronics while there is still time for repair before the game date. Bring extra batteries.
..............If you have a fan in your mask, (You need this if you play in a humid area and wear glasses.) Check switch and battery wires for breakage or working loose or paint reside insulating connections.
4) Cleanliness. Non encapsulated paint in your gun can cause inaccuracy and variations in velocity. Cleaning is best done soon after you are done playing. Wet paint is easier to remove than paint that has set and dried.
..............Remove the barrel. Hold it up in the light and look through it. If it looks even a little dirty, run a little tap water through it and squeegee it out. If you do not have a squeegee, get one. The "Straight Shooter" design, a squeegee with a cleaning cloth on one end, works the best. That rag is really handy for field cleaning the Autococker's chamber and hard to reach spots.
.............Remove the bolt. Wipe off any dirt and paint. Be sure there is no paint inside the bolt's air passages. A dab of paint on a ball from any external source will cause it to wobble and annoyingly curve off target. (When you reassemble, be sure the bolt's gas inlet opening is on the bottom to align with the gas passage from the turbo valve.)
............With the bolt removed, squeegee and swab out the gun body and chamber area. Pay particular interest to the ball detent. This too is an often overlooked source of accuracy ruining loose paint. It may be effectively cleaned without removal by using a wet rag on the ring finger and rubbing the ball with enough force to cause it to recess and rotate. Repeat with a dry rag to remove excess moister. Then check the dry rag for signs of paint. If found, repeat procedure until clean.
............Swab out your elbow with a clean rag. If you find paint, then your hopper may also be contaminated.
............Clean the hopper by first pouring in a little water and slosh it around to dissolve paint residue. Then use a rag to wipe it clean. Pay particular interest (and patience) to the ball agitator blades. These too must be clean.
Be sure the hopper's insides are completely dry before loading with paintballs.


That should do it. Follow the concepts in this list and your luck should improve. Everyone's equipment, playing style, and conditions are unique. If and when you do have breakdowns, make a note of what when wrong and what, if anything, could have been done to prevent it. Add that prevention to your checklist.

Good hunting!
Mike Aberle


Two to three drops of oil in the gas entry system, here or the mating receptacle, will lubricate the gun as it is used. Oil the o-ring while you're in the neighborhood.
Before airing -up the gun, add a drop of silicon based oil in the 3-way valve's exhaust hole and stroke the trigger several times. This will directly lubricate the seals.