, and is the first tractor to use selective catalytic reduction (SCR) technology. ... Massey Ferguson's much-heralded flagship MF8690 tractor was launched at the Innov-Agri event in France this week ahead of roll-out four further models Italy later year. First shown MF's 50th anniversary May it is company's most powerful to date and rated 340hp with maximum power output 370hp. It powered by four-valve common rail Sisu 8.4-litre Citius engine first use selective catalytic reduction (SCR ...