All most all of the box store mowers (Tractor style)rely on the same transmission in the hydro drive types. K4x trannies under ideal conditions will last about 150 hours mowing a flat lawn add a grade in there that you are climbing 30% of the time and that shrinks to about 120 hours any type of ground contact equipment used will reduce it to maybe 100 hrs likely less. You don't get into the better hydro tranies until somewhere over $2500 which are the k5x and k6x series. That L130 uses a K46 tranny, it is not serviceable, if it goes south might as well buy a new unit as replacement cost is 2/3 the price of a new unit + labor if not diy.