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Identify set screws Sako trigger

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2007 at 01:50
8shots View Drop Down
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Can anyone identify the set screws on the Sako L61 action and the function of each screw?

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2007 at 10:44
Dale Clifford View Drop Down
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B is sear engagement and A overtravel-- but I could be wrong
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2007 at 11:03
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If you move the picture to the left the top screw is marked C. Is this simply to hold the trigger (and also release it) against the action frame? In other words it must be tight and is not used for any setting? Screw B should then adjust the pull weight of the trigger?

I have fiddled with these screws at all possible settings and get hardly any, if any, change in trigger performance. Except if I turn them all the way, then nothing works!

I have ordered a Timney trigger which should arrive in South Africa some time. (I may be lucky as the agents had put an order in for other stuff and managed to get this included.)

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2007 at 11:19
Dale Clifford View Drop Down
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opps missed C yes that controls the first levers engagement with the firing pin sear. somehow I keep coming back to a problem in this area.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/05/2007 at 03:31
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Dale, does one adjust screw C, or is it simply tightened untill the rear of the trigger housing is tight against the action? As in my picture.

If I turn the screw C outwards, the rear of the trigger housing rocks away from the action, giving less engagement with the firing pin sear. If I turn it up, the sear rocks closer to the bolt and gives more engagement.

The question is, does this come into play when adjusting the trigger pull?

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/05/2007 at 10:31
Dale Clifford View Drop Down
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unless the trigger is a "hanger" like a remington it is very difficult to make a trigger that will mate properly when they are manufactured seperately, the sako follows the old mauser pattern. All this requires is to attach the trigger by some pinning mechanism then take up the tension with a set screw. after that backround and answering your question directly-no the tension screw is set so the the other action screws can vary. It is possible to change the engagement at the this point however, by in effect lowering the entire mechanism away from the sear on the firing pin. Obviously this is an advanced kind of thing. loosen the screw and using some shim stock , (pop can or something) place it in between the trigger and the receiver to check and see if this helps with the let off. if it does you know a least one of the problem areas (hopefully the only one. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/05/2007 at 11:11
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Thanks I will try this and see if I can get a better adjusted pull.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/16/2007 at 21:50
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A is overtravel, B is pull weight, and C is sear engagement ("creep").  Adjust A by turning it in until it stops, cock the action and pull the trigger.  While simultaneously applying pressure to the trigger, back out the setscrew until the trigger just fires, then turn the setscrew out an additional 1/2 to 3/4 turn to ensure you always have sufficient clearance for the sear to trip.  Adjust B to the desired pull weight, but not too light such that the trigger can fire from the rifle being jarred.  Test afterward by trying to slam fire the action.  First put the safety on, squeeze the trigger, release the trigger and flick the safety off.  It should not fire.  Then work the bolt vigorously with the safety off, slamming the bolt closed hard.  Again, it shouldn't fire.  Finally, with the action in the stock, bump the buttpad against the floor smartly with the action cocked and safety off.  If it still doesn't fire after these three tests, your adjusted pull weight is probably safe.  Once you have the trigger to the desired pull weight, tighten the jam nut back against the housing.  IMO, a good big game hunting trigger weight is no less than about 2 lbs.  A 2 lever trigger design like the Sako is not designed for a safe pull weight much lighter than that. 

 

I would avoid adjusting sear engagement unless you have excess objectionable creep.  To reduce sear engagement (amount of creep), turn the setscrew until the cocked action fires, then back out about 1 additional turn or so in order to insure you have sufficient sear engagement for safety.  Be very careful with this adjustment -- too little sear engagement is even more dangerous than a pull weight that is too light for the trigger design.  If you do adjust it, do so before you adjust pull weight and do the slam fire tests to verify safety.  Of course, it goes without saying that you should verify the rifle is unloaded before adjusting the trigger and/or testing your adjustments for safety.  Once you get all adjustments to your liking, it's a good idea to put Lock-tite, some type of enamel sealer, silicone, or other thread locking compound on the setscrews to prevent them from moving.

 

Adjusting the trigger isn't difficult, but the consequences for making mistakes can be deadly, so I would suggest that unless you are very experienced with working on triggers, leave trigger adjustments to a qualified gunsmith.  It won't cost much, and it's best to always err on the side of safety when dealing with a gun's fire control system.

 

 



Edited by RifleDude
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/21/2007 at 03:08
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Miracles do not cease! For those that have followed this and various other threads know about the problems I have been having with my Sako trigger. Also with the problems of finding a replacement trigger. I have e-mailed Timney, phoned them etc and Sako triggers are just not a prioroty for them. I have also phoned just about every gunshop in South Africa to no avail. This has been going on for several months now. Currently I had to even remove the safety catch in order for the trigger to work.

Well, yesterday monsieur walked into a smaller gunshop near Cape Town, one that I have been in countless of times, to buy reloading powder and bullets. Whilst paying I looked behind the salesguy and saw some Timney Triggers for the first time in this shop. I looked closer and saw.........Sako!!!! I just could not believe this. The packet was torn and dust covered, but the trigger brand new and all there. This dude says this trigger has been lying around for a long time and he will give me a nice discount if I take it. Turns out the original price was still old stock as well, plus a discount. Man what a luck! So I am busy fitting the trigger, just have to inlet stock a little.

Check that little word that says SAKO!!!!



Edited by 8shots
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/21/2007 at 10:28
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Good deal, 8shots!  Sorry you were having problems with your stock Sako trigger.  I assure you that isn't typical of Sako's triggers, but the Timney is a good replacement unit and I'm sure you'll be pleased.
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