Engine Series SERIAL NUMBER LOCATION
208 On plate attached to air cowling.
210 On plate attached to air cowling.
411 On plate attached to block beside dipstick and stamped in crankcase.
413 On plate attached to engine upper right of cooling blower and stamped on rear of cylinder block above injection pump mount.
511 -1 Cyl plate on starter and stamped at flywheel flange.
511 -2 Cyl plate behind starter or stamped in block rib next to dipstick.
513 On plate attached to engine upper right of cooling blower and stamped on rear of cylinder block above injection pump mount.
912 -2 Cyl plate behind starter or stamped in block.
912 -3-6 Cyl plate behind starter and stamped on flange in front of injection pump. 
913 On plate on block starter side just above oil pan and stamped on flange in front of injection pump.
1008 On plate on intake manifold and rocker cover and stamped into crankcase on flange at flywheel starter side.
1011 On plate either on rocker cover, side of crankcase starter side, or on air 
  cowling, and stamped on flange near flywheel on starter side of engine.
1012 On data plate right side of crankcase just above oil pan and stamped into flange of crankcase right rear above pto mount.
1013 same as 1012 series
1015 On plate on crankcase opposite starter side, on plate in front of right bank below cylinder head, and stamped on flange behind injection pump.
812* On plate below starter and stamped on flange in front of injection pump. 
714* On plate top left of blower housing and stamped into crankcase in 'V' behind blower housing.
  NOTE: ALL SERIAL NUMBERS ARE SEVEN (7) NUMERICAL DIGITS