I bought a lawn tractor and was told the warranty covered accidental damage however the store lied.?

I purchased a lawn tractor from Sears with an additional warranty. I was told I was purchasing a warranty that covered accidental damage and maintenance, I was supplied with a brochure for this "Master Plan Warranty" but now I have been told that Sears does not offer the Master plan for lawn equipment so they will not honor the conditions as I was told. I have contacted Sears and they say the only thing they can do is contact the store. I feel that I was blatantly lied to, the actual warranty I have does not cover accidental damage or maintenance. Had I known this I would not have purchased the item, can I sue them to take back the lawn tractor?