</font><font color="blueclass=small">( </font><font color="blueclass=small">( One thing you may read in your warranty, and it's common in tractor warranties, is that there is a possibility that you will be responsible for paying part of the cost of the part. They term it something like a wear and tear thing. )</font>
John,
That may apply to wear items like tires, brakes, belts, Etc.
But a coupler between the engine and transmission is expected to (and should) last the life of the machine.
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Vince, I agree with you on this. There are normal items that are considered "wear and tear" items. Some folks refer to them as the "consumable" items. They would include oil filters, air filters, belts, fluids, hoses, tires and the battery. But I would not consider any part of the transmission, housing, coupling, etc to be one of those types of items. The "part" should be replaced without cost if it is under warrenty (perhaps a labor cost, if the labor portion of the warrenty is expired).