TE20 & TO20 has oil filter in center of oil pan, raised engine block casting numbers of Z120C500, rear axle housing to center rear end housing has evenly
John Deere 2 cylinder muffler colors – most mufflers on waterloo built tractors prior to the 20 series were painted green, 20 series up were black. Dubuque built
If the serial number tag is missing you can estimate the year by when the castings were made. The bigger castings such as transmission, rearend, clutch housings, rear
‘VA’ series used a foot throttle along with the hand throttle, raised letter casting numbers will start with VT. ‘S’ series Case has a sheet metal grille cowling,
Before starting the engine, momentarily touch one end of a piece of wire to regulator terminal marked ‘arm’ or ‘gen’ and the other end to terminal marked ‘bat’.