KUBOTA – L2501 – ELECTRICAL SYSTEM – OPERATOR PRESENCE CONTROL (OPC) SYSTEM – ELECTRICAL CIRCUIT – Manual Transmission Type – Engine Does Not Stop (Case 1)

โ€ข PTO Gear Shift Lever: “OFF”
โ€ข Range Gear Shift Lever: “Neutral”
โ€ข Seat: “When Operator Sits on the Seat”

(Continued)
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 range gear shift lever.
This system is controlled by the seat switch (13), the PTO switch 1 (14), the range gear shift lever 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 tilted forward) and the range gear 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 switch 1 (14), the seat
switch (13) and the range gear shift lever switch 1 (16).
3. When standing up from the seat while shifting the PTO gear shift lever and the range gear 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).