It should be adjustable from 2 to 4 pounds . They are usually set at 3
Here is Doc’s answer :
Can you give me directions on adjusting the trigger on my White rifle?
Despite the fact that the trigger is fully adjustable, the job is best done by a trained gunsmith. Experience has shown us that if you’ve never done it before, you hadn’t ought to be trying it on your White rifle. If you do, your chances of having to purchase a new trigger is pretty good. They cost about $100. A gunsmith will adjust your trigger for much less than that. DOC