TM 10-3930-671-24 2. Connect a tachometer. 3. Check   all   throttle   control   linkage   for   complete and free movement. 4. Start  the  engine  and  let  it  warm  up  until  it  runs evenly and accelerates smoothly when you push on the accelerator pedal. Allow the engine to warm up to operating temperature before putting it under any load conditions. Engine RPM at Idle Engine Idle Speed Chart Truck Engine Model Idle Speed Setting TMD27 Engine 650 rpm, nominal Range:600-700 rpm Check  the  engine  idle  speed.  If  idle  speed  is  not  within specification, adjust the idle screw setting, as necessary. Refer to Section 4.10, Engine Adjustments. Engine RPM At Max No-Load Governed Speed Push the accelerator pedal slowly to its maximum travel (fully down position). When the governor begins F-88