It is metallic sound as if the blades are hitting the deck or another metal object.When you shut the deck off is the noise a clack, clack, clack, or a metallic rrrrrrtttttttt.
Okay I guess it's time to drop the deck and take a very close look at it. Thanks for the idea. The model number is eight digits on the manual cover. Should I be looking elsewhere?You appear to be missing a digit in your model number. Look at the base of the spindle and look for cracks @ where it bolts to the deck.
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The tractor is four years old. Attached is the cover of the manual showing the model number. Thanks.Should be on a tag on the back, or under the seat. The tractor with the model number you gave is old, very old.