A transmission for a work vehicle having PTO function is disclosed. A lock is slidably disposed in the transverse bore to engage and disengage a tube adaptor. The side information components and validity information is stored and the user interface is modified by using said stored side information components. The transaction has storage for transaction data, or a pointer to transaction data, to be transferred through the transaction. Accordingly, a rotative force is not deteriorated even by small particles such as fine dust and hair, owing to the inertia added to the turbine, thereby improving a cleaning efficiency.