TM 10-3930-669-20 4-7.  GOVERNOR ADJUSTMENT (CONT). b. Adjustment. (1) With the aid of an assistant, start engine (TM 10-3930-669-10) and observe engine idle speed on STE/ICE- R. CAUTION Do not allow engine speed to exceed 2800 RPM.  Damage to engine could result. NOTE • If engine idle speed is other than 650-700 RPM, proceed to step (2). • If engine idle speed is 650-700 RPM, proceed to step (5). (2) Holding idle adjustment screw (3) stationary     loosen     locking     nut     (4)     on governor (5). (3) With the aid of an assistant, turn screw (3) to  the  right  or  left  until  the  engine  idle speed is 650-700 RPM. (4) Holding idle adjustment screw (3) stationary, tighten locking nut (4). (5) With   the   aid   of   an   assistant,   observe engine idle speed on STE/ICE-R. (6) Shut engine OFF (TM 10-3930-669-10). 4-20