Thats it right there! It is an auto and is belt driven from the motor to the trans and then shaft to the front and back. The auto is a centrifugal deal and works great!
I have been plowing a ton of snow with it and it does great. Only when it is really heavy wet snow or ice and it piled up over the plow will it not want to move it. The only problem is that I go through 4 gallons of 93 octane fuel in 27 miles while plowing! I also put the snow chains on it and they helped a little.
I went down tonight to plow out my buddies driveway so that we could pull his MR2 out of the bottom and on my way back up the road my dad said all he saw was a bunch of sparks from the chains. He said it looked pretty cool.