Go to your local parts store and pickup a funnel with a flexible hose on the end. I've seen them at about every parts store I've been too. If you know where the fill bolt is, just remove it and start pouring. An empty D-series tranny takes a little under 2 quarts, a B-series is a little over 2. I recommend you spend the money and pickup Honda MTF, it's $5 a bottle but you only change it every year or two.