A working vehicle includes a linkage, a receiver to receive wireless signal(s) from transmitter(s) in/on the attachment(s) and including identification information of the attachment(s), and a controller configured/programmed to select identification information of the attachment attached to the linkage from the identification information included in the received wireless signal(s), and start a process based on the selected identification information. The controller is configured/programmed to cause a memory and/or storage to store, for a first period of time, the identification information included in the received wireless signal(s), and when the attachment is attached to the linkage, perform a first selecting process to select identification information satisfying a first condition from the stored identification information, and, if no identification information satisfying the first condition is stored, perform a second selecting process to select identification information satisfying a second condition from identification information included in wireless signal(s) received after the attachment is attached.

A quick coupler system for connecting a work tool to an arm of a work machine includes an adapter bracket with spaced apart side walls each having first and second adapter openings for receiving first and second bracket pins of a work tool bracket. The adapter bracket is disposed between bracket side walls of the work tool bracket when the adapter openings receiving the corresponding bracket pins. A coupler link having first and second coupler openings receives and engages the first and second bracket pins to connect the work tool to the arm, with the coupler link being disposed between the adapter side walls. The adapter bracket may have an adapter hydraulic interface block that is aligned with a coupler hydraulic interface block of the coupler link to form a fluid flow path for hydraulic fluid from a pressurize fluid source of the work machine to the work tool.

A coupler cylinder is driven between a locked state and an unlocked state of a bucket by being supplied with hydraulic oil. A main pump supplies the hydraulic oil to the coupler cylinder. A pressure increasing valve controls the supply of the hydraulic oil to the coupler cylinder. A controller controls drive of the pressure increasing valve. The controller instructs the pressure increasing valve to stop the supply of the hydraulic oil to the coupler cylinder based on pressure in an oil passage between the main pump and the coupler cylinder.