The structure, function and dynamic behavior of the cytoskeleton can be very different, depending on organism and cell type. Even within one cell the cytoskeleton can change through association with other proteins and the previous history of the network. A multitude of functions can be performed by the cytoskeleton.
The new Courage XT-6 (3.5 net HP) and Courage XT-7 (4.5 net HP) engines will be available on OEM push-mower brands in early 2008. The first two models from Kohler are engineered in the United States with high performance and ease of use in mind.
I've got an 83 G1E that the motor is bad and the batteries are 6 years old. I was thinking about converting it over to gas rather than keeping it electric. I've also got an old Case riding tractor/mower 10 hp Kohler engine with Hydrostatic drive (fluid drive) that runs good and I don't use anymore. The thing is built like a tank, everything is waaay heavier duty than was ever needed for a mower.