28. MACHINES READY FOR ATTACHMENTS 28.2.1 CONNECTING HYDRAULIC CIRCUIT When connecting the attachment, connect the circuit as follows. 1. Remove blind plugs a located on the end of the stop valve piping (2 places, left and right). Take care not to lose or damage the removed parts. 2. Connect attachment tubes b supplied by the attachment manufac- turer to the end from which the plug was removed in step 1. PATH OF OIL The direction of operation of the pedal and the path of the oil are as shown in the diagram below. A b PC450-ENG 5-8 bB