* l l l WARNING Avoid contact with hot manifolds, pulleys, avoid  personal  injury. Wear  proper  ear  protection  when  running engine  can  cause  hearing  loss  or  injury. TM9-2815-202-34 and other moving parts to engine. Noise Protective  turbocharger  air  inlet  shield  must  be  installed volume   of prior  to  doinu maintenance   when  e-naine is  runnina  and  air  inlet  has  been  removed.- Contact  with  rotating  blades will  cake  injury  to  personnel. CAUTION Run engine in clean area when air intake ducting  is removed. Dirt, dust, and particles in unfiltered air can enter engine and damage parts or cause mechanical failure. NOTE A manometer  measurement  is  the  sum of the displacements from zero of the two columns of mercury. This value is expressed as inches of mercury. Start engine and operate at FULL LOAD at 2300 RPM, slowly open tube connector(1)  and measure  air  box  pressure  indicated  on  manometer. For models 7083-7395 and 7083-7396, measurement is a maximum of 55.0 and a minimum of  45.0 inches of mercury. For models 7083-7398 and 7083-7399, measurement is a maximum of  44.0 and a minimum of 36.0 inches of mercury. For model 7083-7391, measurement is a maximum of 62.0 and a minimum of 50.0 inches of mercury. Move  governor  stop  lever  to  NO-FUEL  position  to  stop  engine. Disconnect  hose  (5)  from  air  box  drain  tube  (6)  and  manometer  (2). END  OF  TASK l l l Change 1 8-45