Quique Sanchez Flores hopes to take another step towards replicating the heroics of the Watford side that reached the FA Cup final in 1984 by beating Leeds United in Saturday's fifth-round match.
Watford's best performance in the competition came in the 1983-84 edition, when they ended as runners-up after a 2-0 defeat to Everton at Wembley.
Flores' team overcame Premier League rivals Newcastle United in the third round before a slender win at Championship side Nottingham Forest.
"The league is our main priority, of course, and we are really close, but now we are able to change the mentality when we are going to play in the FA Cup," said Flores.
"Our focus this week is on the FA Cup, we are playing at home with our fans, so we accept the responsibility to try and win this match.
"We respect this competition and, of course, we would like to repeat the experience this club had in 1984 when they played in the final against Everton."
"I was analysing the Middlesbrough game [a 0-0 draw] and their other matches with our staff, and they have a good team," he added.
"They play in the way that other Premier League teams play - with power, they try to play football, they have three players in the middle who play well - so we need to think well about this match."
"We are taking on the second biggest success story of the Premier League this season," he said.
"We have been working hard on a plan. This isn't a league game, there's no coming back. If you are average on the day, you're out."
