You can grind a spanner down to fit.
Or, loosen the nut nearest you, then "tilt" the carb away;
that will ease the pressure on the other nut and you may
be able to spin it off by hand or with a small chisel/screwdriver.
Or, loosen the nut nearest you, then "tilt" the carb away;
that will ease the pressure on the other nut and you may
be able to spin it off by hand or with a small chisel/screwdriver.