or rotate upward when the lift cylinders 23 stretch out whereas the booms 21 go down or rotate downward when the lift cylinders 23 shrink on the other hand the bucket 26 turns upward when the dump cylinders 24 shrink whereas the bucket 26 turns downward when the dump cylinders 24 stretch out the bucket control lever 18 and the boom control lever 20 are illustrated in fig3 a to fig3 c and the hydraulic circuit is illustrated in fig4 the bucket control lever 19 is to operate the dump cylinders 24 of the front loader 16 the bucket control lever 19 consists of a grip 19 a a rod 19 b and a protection part 19 c the grip 19 a is made of resin and shaped by an injection molder the lower part of the rod 19 b is held inside the right fender f the protection part 19 c covers the gap between the rod 19 b and the fender f in order to prevent dust from coming inside the fender f the protection part 19 c is made of a flexible material to enable it to follow the movement of the rod 19 b the bucket control lever 19 is connected to a selector valve 50 the selector valve 50 changes.