My experience with CVT problems is this:
The CVT manages the speed of the tractor by changing the size of the pulley that the drive
belt from the motor turns (i.e. variable speed pully)
The variable speed pulley (VSP) operates by having a sheave that slides up and down the pulley's shaft, thus changing its size.
What I've encountered is that the shaft either becomes rusted and the sheave doesn't
slide properly, or overheating causes the sheave and shaft to become galled and the
sheave wont slide at all.
If you remove your battery and pull out the battery pan you will see the big transmission input pulley and the VSP on the left.
Set your brake so the the drive belt is loose and you should be able to get some
movement of the center sheave of the VSP with your fingers.
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