Darell: Your mower IS part of the units addressed in the Service Bulletin, and could benefit from new-style adjuster plates. The arms should be inspected for wear and replaced at the same time if necessary.
As the warranty has expired (as of 3/17/2012) on this specific mower, installing new plates would be at your cost. Any Honda dealer can do this, or you can DIY in just a few minutes. I think the wheel bolt will come off with a 14mm socket, and just apply some fresh wheel bearing grease as indicated here:
The part number for the new adjuster plate is :
42951-VK6-801.
Google any part number to find a Honda Dealer selling it online, or use this link to find a Honda Dealer in your area:
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