Using the previous chart, we can see that the 303447 refer to the following engine spec.30 Cubic Inch, design series 3, horizontal crankshaft, ball bearing, pressure lubricated engine with anelectric started and gear drive alternator.The type number list specification normally related to the OEM options and requirement.This included the engine paint color, governed speed and OEM information.The code tells us that this engine was built, June 12, 2001 on line 1, plant 1.All of this information is needed to properly test, adjust and repair the engine.