Pressures of less than 4 psi at idle will, after a certain time delay, cause the shut-down mechanism to trip and shut down the engine. Pressures of less than 15 psi at full engine speed will actuate the shut-down mechanism without a time delay. A low lubricating oil pressure switch within the governor connects to an amber indicator light on the control panel. Lighting of this light indicates a failure of the engine lubricating oil pressures. Filling the System 1.
Oil is added thru the engine fill opening on the side of the sub-base.
Top and side shutter. Radiator cooling fan to see if it is running. The water level. The temperature regulator or servo-motor if the fan is not running.