Question about Craftsman 20 Hp 42" Deck Lawn Tractor

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One side of the tractor is cutting higher than the other

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Make sure you don't have a flat tire, first. If tires are OK, the mower deck may need to be leveled. Look at the arms that suspend the deck under the belly of the tractor. Make sure there isn't a branch or something caught in the mechanism, keeping the deck from hanging down where it should. If all that is OK, then the deck must be re-leveled. Park on pavement. Find the nuts on the suspension arms that can be loosened up, turned to a different position, then retightened. Use a ruler or a mark on a block of wood to ensure the left blade tip is the same distance from the ground as the right blade tip.

Posted on Jun 05, 2010


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This is rather odd. Are you saying it's higher because of the grass height from one side of the deck to the other after mowing?
Sometimes when a spindle bearing is sloppy or played out, the belt pulls the spindle to one side. As you might imagine, this tilts the cutting blage and causes a close cut on the inside and high cut on the outer.
I would check the spindles for bearing issues. If they are ok, I would check to see if you have an issue where one blade that might be installed incorrectly. The heights aren't adjustable per the blades, just the entire deck is adjustable.
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