running but ground engaging mechanism 14 is not driven engine 22 operates at a lower speed in second idle state 44 than in first idle state 40 for example the speed of engine 22 may drop by approximately 20 to 40 from first idle state 40 to second idle state 44 and more specifically the speed of engine 22 may drop from between approximately 900 and 950 rpm in first idle state 40 to between approximately 600 and 700 rpm in second idle state 44 in addition to reducing the speed of engine 22 in second idle state 44 hydraulic components 20 may be disabled and engine 22 may shift to operate along a different torque curve referring still to fig3 the idle function is configured to be modified by a user from the monitor in operator cab 16 fig1 the user may disable the idle function altogether also from the monitor the user may set an idle timer to control the duration of first period of time 42 the duration of first period of time 42 may be chosen from various provided increments such as 5 15 and 30 minute increments the duration of the idle timer may be set to abide by site specific.