A while ago I saw a post on wheel lock up on personal pace lawn mowers. This transmission is used on so many different mowers that I've bought and used I never knew one important piece of advice. After tugging the lawn mower backwards for six years and Toro or/and Troy Built completely rebuilding the transmission I was told at the end of the warranty by a nasty service person at a call center. You know, it's suppose to come to a gentle stop while going forward. I looked in a manual of some six mowers I bought this year which all failed because of the transmission which said; If mower's front or back wheels lock up, you should push the mower forward while stopped, engine running, about three inches. It should unlock the wheels. It did. I can't find the original post but the guy summed it up by saying he was tired of pulling a "boat anchor" backwards every time he had to stop and reverse directions. My feelings as well, after years with these transmissions both greased and non greased. I wonder if they ever told any one about how to solve this problem. I only found it in one manual and that was this year.