1A3 Tachometer Sending Unit

1A3 Drawing in GIF format


The 1A3 Tachometer Sending unit is designed to screw into the engine's mechancial tachometer port (Lycoming/Continental style). Included is a .156 diameter tang along with a 6' harness (other lengths available). Franklin engines require a different tang. The 1A3 TSU is designed to work with UMA TSU tachometers only. Optional equipment on the engine may complicate installation (See 1A3 Drawing).