You will have to call Ruger to find out.
You take it to a gunsmith
Yes
Not owner adjustable- take it to a gunsmith.
It is not adjustable.
The Henry lever action rifles do not have an adjustable trigger. A competent gunsmith could improve the function but to answer your question, no........
Unless the work is done by a factory authorized person, you will void your warranty.
Best left to a trained factory representative.
To adjust the trigger on a Marlin 17 HMR, first ensure that the rifle is unloaded and safe. Remove the trigger guard and access the trigger assembly. Locate the adjustment screw, typically found on the trigger itself; turning it clockwise generally increases tension (lightening the pull), while counterclockwise increases pull weight. Make small adjustments, test the trigger feel, and always reassemble and check for safety before use.
Some have a small adjustment screw visible right at the trigger- others are not adjustable. Ceck your owner's manual. If you do not have one, contact the maker.
It is adjustable. Some shooters prefer a lighter pull. A lighter pull reduces the wiggle and shake the shooter experiences when sighting in a target. A heavier pull can move the sight group slightly that at closer ranges is not as great an issue as at longer ranges. On the flip side, some shooters prefer a heavier pull so as to minimize the possibility of an accidental discharge. An adjustable pull give the shooter the flexibility to choose.
Yes, the trigger pull weight of the Anschutz 1451 can be adjusted. This model features an adjustable trigger mechanism that allows shooters to customize the pull weight to their preference. Adjustments can typically be made by altering the screws on the trigger assembly, but it's important to follow the manufacturer's guidelines for proper adjustment to ensure safety and performance.
You may be able to lighten the trigger pull a little by changing the hammer spring. All trigger groups of this kind have "creep" and you may be able to reduce this with a little work, the 7600/7400 and those like it are not truly adjustable.