warranty policies have been a challenge for years in all industries. In the 1970's I ran a big chain store like a Best Buy or Fry's before they folded. Panasonic, Pioneer, Sansui etc,. gave us a choice of them repairing defects under warranty, or we could take 15% off the bill and handle it ourselves. The idea is that if a manufacturer has a 15% warranty rate on roducts then taking 15% off you can just give the client a new one. Then the business can scrap the old one, or sell it as-is to someone who wants to work on it themselves. I suspect the mower industry has something similar in their pricing.