OPERATOR'S STATION KEY SWITCH 1- OFF (Engine Off) 1 2 3 4 2- ACC (Horn, Radio etc.) 3- ON (Engine On) 4- START (Engine Start) M178-01-049 POWER BOOST SWITCH Power boost switch (5) is used to gain maximum digging pow- er, and is located on the top of the right control lever. 5 M1J1-01-024 HORN SWITCH Horn switch (6) is provided on the top of the left control lever. The horn continuously sounds as long as the switch is pressed. 6 M1j1-01-025 1-54