I have bad knees and need a mower that can propel itself over 3" St Augustine grass. I currently use a Scotts front wheel drive mower, but the wheels do not seem to develop enough traction to propel the mower without having to push it. The drive system appears OK and I rarely used it until recently so I know it is not worn out. I want something that is truly self propelled and only requires me to guide it. Thanks in advance.
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