Simplicity Baron Operator's Manual page 29

PTO switch
The PTO switch (A) engages and disengages attachments that
use the PTO, such as the mower deck.
To engage the PTO, pull up on the switch.
Push down to disengage.
When the PTO is engaged, the PTO indicator light (B) in the
dashboard display lights up.
The operator must be seated firmly in the tractor
seat for the PTO to function. If the operator is firmly
seated, the operator presence light (C) will be lit.
C
B
A
B-7