Toro 315-8 User Manual page 152

GLOSSARY
The RMC module is located on the back of the
instrument panel in the same housing as the keyswitch
(Figure 5).
There are two different "shutdown" systems used in
the Reverse Operating System. One system is used
with the electric (PTO) clutch - when the tractor is
shifted to reverse while the mower blade or other PTO
driven attachment is engaged the electric clutch will
disengage. The other system is used with the manual
(PTO) clutch - when the tractor is shifted to reverse
while the mower blade or other PTO driven attachment
is engaged, the engine will stop.
The reverse switch is wired in series between the
module and ground. When the Module is not activated
(indicator light off) the reverse and magneto terminals
of the module are connected together. If the shift
lever is placed in reverse, the magneto is connected
to ground through the PTO switch, RMC module, and
reverse switch, shutting down the engine. Pressing
the reverse push button (Figure 6) with the key switch
in the reverse caution position activates the reverse
caution mode (indicator light on). This disconnects the
reverse switch terminal from the magneto, allowing the
engine to continue run in reverse.
The reverse switch is connected in series between
module and ground. When the Module is not activated
(indicator light off) the switch is internally connected
to the E-PTO terminal. If the shift lever is placed in
reverse, the relay coil is connected to ground through
the RMC module and reverse switch, energizing
the relay. This opens the normally closed contacts
removing the ground from the electric clutch, causing
it to disengage. The normally open contacts are now
closed, providing a second ground path to the coil
through the PTO switch, keeping the relay energized.
This prevents re-engagement of the electric clutch until
PTO is cycled off.
Pressing the reverse push button (Figure 6) with the
key switch in the reverse caution position activates
the reverse caution mode (indicator light on),
disconnecting the reverse switch terminal from the
E-PTO terminal, allowing the electric clutch to remain
engaged.
mod_keysw
1. Start the engine; place the keyswitch in the normal
position.
2. With the seat occupied, place the PTO lever in the
"on" position.
3. With the brake applied, move the shift lever to the
reverse position.
4. The engine should shut down.
keysw