Seat Safety Switch; Starter Solenoid - Cub Cadet 900 Series Professional Shop Manual

ELECTRICAL SYSTEM

Seat Safety Switch

The Seat Safety Switch is a double pole single throw
(DPST) switch. Both poles are normally closed and it is
located inside the seat. See Figure 7.20.
Seat switch
Figure 7.20
• The yellow wire with white trace is connected to
the safety circuit. When the seat is vacant, the
switch closes creating a ground path in series
with the brake switch. If the brake is OFF and
the seat is empty, the circuit is completed, short-
ing-out the primary windings of the ignition mod-
ule, turning-off the engine.
• On tractors with an electric PTO, the yellow wire
connected to the seat safety switch sends a
ground signal to the RMC module when the seat
is vacant.
• On tractors with a manual PTO, the yellow wire
goes to the PTO switch. A yellow wire from the
RMC module connects with the yellow wire from
the seat switch at the PTO switch. The other
side of the PTO switch is connected to the pri-
mary windings of the ignition module. If the seat
is empty or the RMC module senses an unsafe
condition while the PTO is on, a ground signal is
sent to the ignition module, turning-off the
engine.
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trace

Starter solenoid

The starter solenoid is mounted inside the seat box
section of the frame. See Figure 7.21.
Starter solenoid
Figure 7.21
The starter solenoid can be accessed by removing the
battery box and reaching through the opening.
See Figure 7.22.
(battery removed)
Figure 7.22
When the proper safety conditions are met, (brake
applied, PTO OFF) the orange wire with white trace
energizes the windings that magnetize an iron core,
pulling the contacts closed between the two heavy
posts, connecting battery power to the starter motor.
The green wire provide a ground for the coil inside the
starter relay.
Battery box