Run toribash_server.exe with the command line arguments -l <percent>

Eg. if Toribash lies in CProgram Files\Toribash\, and you want to set it to 50
Start -> Run...
"CProgram Files\Toribash\toribash_server.exe" -l 50

All options can be set in such ways, by adding more options to the command you're running. The list of options, with default values, is:

-p <port> - listen port (20184)
-m <frames> - match frames (120)
-t <frames> - turn frames (10)
-r <sec> - reaction time (20)
-f - flags (1=DQ, 2=Decaps, 4=No Grip, 3=DQ&Decap) (3)
-s - sumo (0=HF, 1=HF and WA) (0)
-e <cm> - engage distance in centimeters (100)
-j <cm> - dojo size in centimeters (0)
-l <percent> - dismember thresh hold (100)
-d <model> - damage model (0=opponent, 1=both, 2=self) (0)
-o <name> - mod name (classic)
-C <clients> - max number of simultaneous clients (12)
-T <sec> - Socket timeout (5)
-L <file> - Name of log file
-N <name> - Name of server (will show in mutliplayer server desc)
-D - Daemonize server
-R <pass> - Remote console password
-P - Premium server