When starting up with the starting switch, the starter has no response or only sounds the actuation, and the engine does not work.

whether in the cold or heat conditions, the idling speed of the diesel engine is not stable. The body shakes seriously with the speed sometimes high and sometimes low, and even cannot maintain the normal operation and turn off.

The type of oil is used improperly; the oil viscosity is too low; the oil is not changed according to the seasonal provisions. The oil is too dilute or the oil-replacement period is too long.

When the clutch petal is loosened at starting, tractor cannot be started or difficult to start;

When clutch pedal is pressed to the end, it is difficult to put into gear or cannot put into gear for gear-box and at the same time there is impact sound of gears in it.

The abnormal noise of gear-box means that there is abnormal noise in gear-box which is mainly caused by the looseness of worn bearings and unusual engaged gears.