Kubota B1830 Workshop Manual page 415

B1830,B2230,B2530,B3030, WSM
Operator Presence Control (OPC) System
B1830, B2230, B2530, B3030 are configured with an "Operator Presence Control (OPC)" system to control
engine starting automatically stopping.
This OPC system mainly consists of controller and engine starting / stopping control switches such as the HST
pedal switch (or shuttle shift lever switch), the seat switch, the independent PTO lever switch (or PTO ON-OFF lever
switch), the PTO select lever switch (with MID PTO) and the parking brake switch.
Main parts regarding OPC system are laid out as shown in the electrical circuit.
(1) Battery
(2) Slow Blow Fuse
(3) Glow Plug
(4) Main Switch
(5) Independent PTO Lever
Switch
(6) Parking Brake Switch
(7) Seat Switch
(8) HST Pedal Switch (HST Type)
or Shuttle Shift Lever Switch
(Manual Type)
(9) Relay
(10) Starter Motor
(11) OPC Controller
(12) Charge Lamp
9-M9
ELECTRICAL SYSTEM
(13) Key Stop Solenoid Relay
(14) Key Stop Solenoid
(15) Alternator
(16) PTO Select Lever Switch
9Y1210003ELM0004US0
KiSC issued 05, 2012 A