Snorkel TB50(mfg before 2/1/01) - Manual (Page 37)

6. CONTROLS
6 - 5 P/N 0074333
8. ANTI-RESTART MASTER SWITCH: This
switch works like an automobile ignition switch.
Hold it at START until the engine starts then
release it to ON. If the engine dies in ON, the key
must be turned to OFF before it will go back to
START. Turn the switch to OFF if the platform is
to stay in a particular position for a long time.
This will turn the engine off and save fuel.
NOTE: On some machines you might have to
pause about three seconds in the ON position
before going to START so the starter can
engage.
9. Foot Switch: You must step down on the foot
switch, and hold it down, any time you use any
platform control that will move the platform.
Stepping on the foot switch increases the engine
speed and activates other switches/controls in
preparation to do work. (The foot switch is to the
platform what the GROUND OPERATION switch
is to the ground-control panel.)
NOTE: Do not step on the foot switch while
you are trying to start the engine.