How to interpret Model and Specification number of Onan CCKB engine. (1) (2) (3) (4) CCKB MS / 375 J 1 - Factory code for general identification. 2 - Specific Type: S = MANUAL start with stub shaft power take off. MS= ELECTRIC start with stub shaft, starter & generator. 3 - Code for Optional Equipment. 4 - Letter changes with production modifications. * * * * * From a 1936 newsletter: "A Safety Factor That Should Be Encouraged" Fairmont has been watching with growing interest discussion and action in connection with the installation of motor car indicators utilizing existing signal line wires to control indicators to inform men operating motor cars of the approach of trains. The need for such indicators, especially on curves and in cuts, has been evidenced by the numerous attempts of motor car operators to install some kind of a signal directly on the motor car. Generally speaking, Fairmont has frowned on the installation of devices on motor cars because careful study has indicated that a very high degree of maintenance is required to make them suitable for reliable indication of train approach. However, the idea of utilizing existing signal line wire for motor car indicators appears to be sound and, in the interest of greater safety and economy, should be encouraged.