Simplicity 1613H - Safety Interlock System

Operation_
SAFETY INTERLOCK SYSTEM
Your tractor is equipped with a seat switch safety system that
will automatically shut the engine off when the operator
leaves the seat with the transmission lever in gear or PTO
engaged. Once the engine has stopped, the electric PTO
switch must be turned off after operator returns to seat in
order to start the engine.
Check operation of dash safety lights. With operator in seat
and ignition switch turned to ON (engine not running):
a. Neutral light should go on with transmission lever in
neutral gate and should go out when lever is moved to
either forward/reverse gate.
b. PTO light should go on and off with operation of PTO
switch.
c. Oil pressure light should be on and should go out
immediately after engine starts.
d. Operator present light should go on and off as operator
lifts off seat.
Seat Switch Tests
Check the seat switch (A, figure 5) every fall and spring with
the following four tests.
.WARNING
If the tractor does not pass the test, do not operate
tractor. See your authorized dealer. Under no
circumstance should you attempt to defeat the
purpose of the safety system.
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Figure 5. Seat Switch
A. Seat Switch
B. Wiring Harness