Attention! Be careful - the liquid can be very hot.
Remove the oil pan mounting bolts and remove the pan, while preparing for a possible fluid leak.
Remove the old gasket from the gearbox housing and oil pan, being careful not to damage the mating surfaces and to prevent dirt from entering the gearbox housing.
Install a new gasket on the transaxle case, pre-apply a coat of clean lubricant to hold the gasket in the correct position.
Establish the oil pallet and fix bolts, having tightened them the demanded moment.
Screw in the drain plug, fill the gearbox with fresh working fluid.
Check the gearbox for leaks.