Bought a brand new 2011 Toro Groundsmaster 4000 last month and currently has roughly 200+ hours. Here are the following problems we've incurred after purchasing the machine. Emergency brake got stuck at 2 hours. Fan shroud melted when the engines overheated around 25 hours... Right rear wheel fell off at the differential, 6 bolts holding the hub on all sheered off at once. - 170 hours Accelerated peddle lost neutral adjustment and which would cause the engine not to start - 200 hours Screw caps on top of wheels that adjust the deck heights fall off and get run over - ongoing problem I wanted to open this thread up to discuss any other problems companies are having with this machine. We are looking to buy one or two more of these machines but would like some input from everyone on their problems on these groundsmasters. If you've had success with a similar machine that input would be greatly appreciated too.