i did mine from the other side, remove air box and take off the intake pipe from the TB end, (just the spring clip) left the breather etc connected.
spray a bit of carb cleaner onto the butterfly (closed) and clean, then get someone to push the accelerator pedal in (engine off!!!)

spray some more cleaner in there and clean as far as you can reach, i just did mine with an old microfibre cloth. shouldnt take more than an hour.