The LFM is tuned like a standard baritone guitar. The most common tuning from the first string is: B, F#, D, A, E, B.
There are, however, many musicians who prefer to lower this tuning by a semitone or a whole tone. Finally, some guitarists/singers, tune it a semitone above (C).
EXTRA TIP:
Remember that each time you permanently tune an instrument in a different key you may need to adjust the trussrod given the change in string tension.