Need help understanding Steyr trigger adjustments

I have a new Steyr Challenge that I am learning about. I decided to adjust the trigger, in particular the second stage. For me it is needs to be lighter. I've tried a couple adjustments but can't get the second stage any lighter. I've added a picture to help explain what I've done and maybe someone can shed some light on what I'm missing.

Going from left to right. The second stage screw, 1st stage screw and 3rd screw that I don't know what it does. I've tried backing out the second stage screw to the point that it could fall out and it doesn't do anything to the pull weight of the second stage. I tried adjusting the third screw in and out and I can't tell what it is doing. So, what am I missing? First stage is fine but when I hit the second stage wall its too heavy for my liking. Can someone shed some light?

Thanks

Jerry

In order to get the lightest possible trigger you will need to remove the stock so the internal sear engagement adjustment can be accessed. I do not have any pictures or written instructions but once you have access to the trigger internals you will see only one small set screw to adjust the sear engagement. I think it takes a 1.5mm allen wrench. With the gun unloaded and cocked turn the set screw clockwise until the trigger releases. You can leave the cocking lever partially open so the gun does not discharge. when the trigger releases turn the screw counterclockwise about 1/8th turn and see if the gun will cock. If not turn counterclockwise in tiny increments until it does. then check if the gun can be bump fired and adjust accordingly.

Then you can use the externally accessible adjustments to fine tune it. 

Thank you

Jerry

I found a picture that may help. Item #6 is the sear and item #11 is the screw you need to adjust.

owners manual anyone

https://www.steyr-sport.com/en/downloads/steyr-air-rifles/manuals-1/66-steyr-challenge-1/file

Problem is Mike the manual doesnt explain the 3rd screw and the second stage screw isnt doing anything when adjusted. looks like i may have to take things apart like suggested above

Jerry

they do talk about all three adjustment screws sections  5.1 - 5.2 - 5.3 and the only difference is the adjustment in 5.3 for the E trigger

well some times when you get to adjusting a trigger you get let say lost, not meaning you don't know what your doing, just not seeing the changes and at that point you start over

make adjustments that make the trigger pull the hardest and slowly turn one screw at a time, the changes could be very small, too which your finger is not sure it is better or worse, a trigger gauge might help  

now I don't own this rifle but I have adjusted many trigger and these instruction look fairly straight forward and I'm guessing nothing is wrong with your trigger unit

start over is my advice and that is about all I can do but you have to understand what you are do as you adjust the trigger so slow is the way to go

good luck take care

mike

Well I took the trigger cover off and it did makes things more clear. There is a second stage sear engagement screw like described by Tvanpool. A slight adjustment helped to make the second stage let off a bit lighter. Hopefully with shooting it some the sears will smooth out more and let off will become lighter.

Looking at my picture from left to right. you have second stage adjustment, 1st stage adjustment, 3rd screw I still don't know what it does and the 4th screw that doesn't have a key in it is for 1st stage weight. 

Jerry

Pm sent with a couple of pics that should help.

After looking at the trigger unit you can tell what does what accept for the screw directly in front of the trigger shoe. Maybe its there just to hold the trigger carrier I don't know. What is surprising to me is the amount of pressure required to break the second stage. Perhaps after some break in time the sears will smooth out  and it will trip easier. Anyone have similar experience? 

Jerry

There are only three external adjustment screws, The one in front of the trigger guard is for second stage weight, the one in the front of the trigger carrier is for first stage travel and the one in the rear is first stage weight. The screw you referred to in the center of the trigger carrier is not an adjustment point. On my gun it is sealed with a red paint. All this is in your owner's manual. The only other adjustment is for sear engagement and you have found it. A properly adjusted Steyr trigger should break well below 1 lb. 

Check that you do not have the trigger blade to far to the rear where it may be catching on the frame.