Once started, the trial was not over. To get it in motion, the gears had to be shifted and the clutch would not disengage fully from the engine to allow gear change. Once the gear change was accomplished by ramming the hand lever into position, and listening to the grating noise, the tractor would start forward immediately (there had better be clear space ahead). The clutch pedal had to be ridden for a while until the oil warmed up and the clutch released.