The following instructions will allow adjustment to a competitive trigger weight on any Daisy Model 853, 753, 888, or 887 air rifle, that being a minimum of 1 1/2 pounds.
You will need:
Hacksaw |
1/8" drill bit and electric drill |
Disassemble the rifle down to just the barreled action. When you go to take the cover off the action lift it slowly and put your finger under it to stop the parts from scattering. Take the plunger and spring out. That should leave three parts left pivoting on a pin; the trigger, the sear and the safety catch, from top to bottom. 1. Make the cut shown in picture 1 to the front of the trigger - cut with a hacksaw and smooth with a fine square file. The front of the trigger piece shown is originally .200" in height. You will need to cut .100" off it. The cut should be only .150" from the tip. CAUTION: If this cut is taken too far the funtion of the safety catch could be affected. |
2. Make a cut shown in picture 2, taking off approx half of the tip - using the same tools. |
| 3. Cut small pin pointed out in picture 3. It should be cut to about half its length. A pair of sidecutters can be used for this, then clean up the edge with a file. |
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| 4. You will need to drill and tap a hole at the back of the trigger guard at the angle shown in picture 4. Note: there is an oval hole and a dimpled circle (shaded yellow in photo) that's left from the molding process you can use to align the bit to drill the hole. I use a 8/32" screw approx 1" long, the hole drilled with a 1/8" bit. |
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| 5. You will need a dremel tool or something similar to open up the back of the trigger guard for the adjusting screw as shown in picture
6. Note: it's easier to get a flat surface for the screw to seat on if you use a flat tipped bit as shown. The adjusting screw has to be backed out to reassemble the gun. |
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The way this modification works is by shortening sear engagement. Trigger travel is shortened, as well as trigger weight lessened.
To adjust:
Cock the action (making sure the gun is unloaded first of course). Hold the barrel vertical, hang the 1 ½ lb trigger weight from the trigger shoe, and slowly turn in (clockwise) the adjusting screw until the trigger breaks. Turn the screw counter clockwise about 1/8 of a turn, then re-check the trigger is still legal weight.
At 1 ½ lb the trigger should be safe. If working below that weight, cock the action and bump the stock firmly to be certain there is enough sear engagement. If the trigger releases you have an unsafe trigger.
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