The Tangerines travel to Victoria Park knowing they face a difficult fixture with Adams' men renowned for their strength and difficulty to break down.
But McNamara, who is trying to encourage his new-look team to pass the ball at every opportunity, believes their best hope of winning the match is by sticking to their own principles in this weekend's meeting.
McNamara said: "It's never easy against a team like County. They always make themselves hard to beat and are usually solid at the back.
"That's what a lot of their success is based upon but we will be attempting to do what we think we are good at.
"That means we'll be trying to get the ball down and pass it around quickly.
"The last thing we want is to be sucked into some sort of battle and have to play percentage football because of that.
"That's not what we're good at so we'll want to avoid that.
"I believe we've got quality players capable of knocking things around which is what we'll be focusing on."