A new 6-year firefighters’ contract in Brockton that carries an overall 11.25 percent raise, including three years of retroactive increases, will be paid from the city’s stabilization account, a majority of City Councilors agreed last week. The request for $3.6 million to pay for the past three years, and the next three years, was brought to them by Mayor Linda Balzotti. Councilor at Large Jass Stewart was the only “no” vote, stressing a concern for using the city’s savings account, basically, to pay for retroactive pay raises, something that could become an issue when the police contract is settled, he said. Officials said the balance of the stabilization account, also considered a “rainy day” fund, is now at about $2.5 million. “This contract is the result of a lot of hard work from both sides of the table,” Balzotti said on Wednesday. “The city and the firefighters union had been in negotiations for four years and I am pleased we were able to come to a fair agreement. Any time we have used stabilization money we have exercised caution, but it was important for us to avoid arbitration, which could have been even more costly to the city. This was important to do.” Full story for BostonGlobe.com subscribers.