TM 10-3930-671-24 4.10. Engine Adjustments Engine Adjustment ..........................................................................................F-107 Idle Speed Adjustment  ...................................................................................F-108 Accelerator Pedal & Linkage ..........................................................................F-108 Throttle Linkage Adjustment ............................... ...........................................F-108 Governor Adjustment ........................................ .............................................F-110 Engine Adjustment Engine Adjustment Procedures Include: 1. Throttle Linkage. 2. Governor Adjustment. NOTE To  perform  this  service  procedure,  it is recommended that you first: • Park truck safely. • Apply    the    parking    brake.        Block    the wheels. • Return  all  controls  to  NEUTRAL  and  turn key switch OFF, except as noted. 1. Open  engine  compartment  and  raise  the  seat deck. Be sure the seat deck support is securely latched. 2. Check  the  condition  of  the  accelerator  control and throttle linkage to the fuel control to be sure it operates freely.  Press the accelerator pedal to accelerate  the  engine  speed  and  let  it  return  to idle.  Check to be sure that the throttle arm idle stop screw makes contact with the idle stop tab on   the   throttle   lever,   or   idle   stop   pin   on   the carburetor. 3. If the idle stop tab or screw does not contact the idle stop, check for damage to or binding of the link- age, or defective throttle return springs. 4. The condition of  both accelerator return springs should be checked for signs of wear or failure. 5. Adjust or repair linkage before making adjustments to the idle speed setting. 6. Check the idle speed setting using tachometer. F-107