Kubota MX5100, Workshop Manual

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9-M6
MX5100, WSM ELECTRICAL SYSTEM
The operator presence control (OPC) system which automatically stops the engine when operator stands up from
the seat while shifting the PTO shift lever or synchro-shuttle shift lever.
This system is controlled by the seat switch (13), the PTO switch 1 (14), the shuttle lever neutral switch 1 (16), the
OPC timer (11), the key stop solenoid relay (9) and the key stop solenoid (8).
1. When sitting on the seat in the state of the key switch (7) “ON”, the battery voltage passes the seat switch (13) and
the OPC timer (11), and maintains the key stop solenoid relay (9).
2. When standing up from the operator’s seat, the circuit from the seat switch (13) to the OPC timer (11) is cut.
However, if the PTO shift lever (or seat is turned over) and the synchro-shuttle shift lever is set to “Neutral” position,
the circuit from the battery (1) to the key stop solenoid relay (9) is formed with the PTO lever switch 1 (14), the seat
switch (13) and the shuttle lever neutral switch 1 (16).
3. When standing up from the seat while shifting the PTO shift lever and the synchro-shuttle shift lever, the circuit
from the battery (1) to the key stop solenoid relay (9) is cut, and the engine is stopped by function of the key stop
solenoid (8).