Taking the rifle down is the place to start. The trigger adjustment thread has a pretty good listing for the old style trigger but the parts about the connector can be disregarded as the new trigger doesn't have a connector. The first step in the field strip as always is to be sure the weapon is unloaded..check twice!! Then depress the bolt release tab which is located inside the trigger guard just in front of the trigger itself. This small square tab is pressed toward the bolt and the bolt is opened and drawn to the rear. It should slide out easily. The bolt release tab sometimes sticks in a depressed mode. Simply hook it with a finger nail after the bolt has been removed and pull it downward. To dis-assemble the rifle the 2 screws located on the bottom metal are removed. One is located just behind the trigger guard, the other at the other end of the bottom metal in front of the floor plate hinge. Be careful here as Remington sometimes has small washers that fit between the bottom metal and the stock surrounding the screws. These need to be replaced where they were found, and failure to do so CAN affect the way the rifle shoots. With the screws removed the barreled action can be removed from the stock. The bottom metal can also be removed but they sometimes require a little persuasion, be gently. The assembly is mostly aluminum and can be damaged..
The diagram shown in the link found in the trigger adjusting string found at the top of this forum is the best I've found. The screws shown in this diagram are for the old style trigger but this is a great aid in your endeavor. Also I would seriously advise you to down load the manual from Remington's website. Be aware that adjusting a trigger is a serious undertaking. If you make a mistake and fail to catch it a very dangerous situation can result. Accidental discharges take lives every year. Always exercise extreme caution. I'll look for a diagram of the new trigger assembly. The cleaning and maintenance instructions for both are the same, so give it a good cleaning and we'll proceed with adjusting the trigger a bit later.