I have a B2320 that has given me no problems. However,yesterday it wouldn't turn over. After checking some of the obvious things I disconnected the safty switch below the seat. It started. I turned it off very happy with myself. However today I went to use it and it started but now I tried to move with no luck. When I step on the forward(front) pedal and reverse (back) pedal I can hear the engine undergoing a slight load. Or maybe it's the hydraulic pump. I would appreciate any help and advice.