(4) Remove the plug in the oil fill hole on the top of the governor case, and fill the pump with about 200cc of pump oil or engine oil. (5) Complete fuel oil piping and operate the pump tester to purge the line of air. (6) Set the pressure of oil fed from pump tester to injection pump at 19.6-29.4kPa(0.2-0.3kgf/cm 2 ) ,temp. at 40 ± 2 degC(104 ± 3.6 degF) 43