Kubota B1620 Workshop Manual

ELECTRICAL SYSTEM
B1220, B1620, B1820, WSM
9-M15
(EU)
(4) Engine Starting Conditions and Automatic Engine Stop
When the following conditions become complete, electric current (12 V) reaches starter S terminal through the
starter relay and relay (2M) from main switch 50 terminal, and the engine can be started.
Engine can be shut off under following conditions since these conditions cause key stop relay to operate and it
controls fuel cut solenoid.
B1220, B1620, B1820 (Without Mid PTO)
B1620, B1820 (With Mid PTO)
9Y1210272ELM0036US0
Main Shift Lever
Switch
PTO Switch
(REAR)
Parking Brake
Switch
Seat Switch Engine Start Key Stop Output
Neutral
(Switch ON)
Neutral
(Switch ON)
Lock
(Switch ON)
Sit
(Switch ON)
Cannot Start ON : Engine Stop
Engaged
(Switch OFF)
Engaged
(Switch OFF)
Unlock
(Switch OFF)
Stand
(Switch OFF)
Start
OFF : Engine
does not Stop
1 Neutral (ON) Neutral (ON) Lock (ON) ON Start OFF
2 Neutral (ON) Neutral (ON) Lock (ON) OFF Start OFF
3 Neutral (ON) Neutral (ON) Unlock (OFF) ON Start OFF
4 Neutral (ON) Neutral (ON) Unlock (OFF) OFF Start OFF
5 Neutral (ON) Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
6 Engaged (OFF) Neutral (ON) Lock (ON) OFF Cannot Start ON
7 Engaged (OFF) Neutral (ON) Unlock (OFF) OFF Cannot Start ON
8 Engaged (OFF) Engaged (OFF) Lock (ON) OFF Cannot Start ON
9 Engaged (OFF) Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
10 ON/OFF ON/OFF ON/OFF ON/OFF Cannot Start ON
Main Shift
Lever Switch
PTO Gear Shift
Lever Switch
PTO Switch
(REAR)
Parking Brake
Switch
Seat Switch Engine Start
Key Stop
Output
Neutral
(Switch ON)
Switch ON
Neutral
(Switch ON)
Lock
(Switch ON)
Sit
(Switch ON)
Cannot Start
ON : Engine
Stop
Engaged
(Switch OFF)
Switch OFF
Engaged
(Switch OFF)
Unlock
(Switch OFF)
Stand
(Switch OFF)
Start
OFF : Engine
does not Stop
1 Neutral (ON) ON Neutral (ON) Lock (ON) ON Start OFF
2 Neutral (ON) OFF Neutral (ON) Lock (ON) ON Start OFF
3 Neutral (ON) ON Neutral (ON) Lock (ON) OFF Start OFF
4 Neutral (ON) OFF Neutral (ON) Lock (ON) OFF Start OFF
5 Neutral (ON) ON Neutral (ON) Unlock (OFF) ON Start OFF
6 Neutral (ON) OFF Neutral (ON) Unlock (OFF) ON Start OFF
7 Neutral (ON) ON Neutral (ON) Unlock (OFF) OFF Start OFF
8 Neutral (ON) OFF Neutral (ON) Unlock (OFF) OFF Start OFF
9 Neutral (ON) OFF Engaged (OFF) Lock (ON) OFF Cannot Start ON
10 Neutral (ON) ON Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
11 Neutral (ON) OFF Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
12 Engaged (OFF) ON Neutral (ON) Lock (ON) OFF Cannot Start ON
13 Engaged (OFF) OFF Neutral (ON) Lock (ON) OFF Cannot Start ON
14 Engaged (OFF) ON Neutral (ON) Unlock (OFF) OFF Cannot Start ON
15 Engaged (OFF) OFF Neutral (ON) Unlock (OFF) OFF Cannot Start ON
16 Engaged (OFF) ON Engaged (OFF) Lock (ON) OFF Cannot Start ON
17 Engaged (OFF) OFF Engaged (OFF) Lock (ON) OFF Cannot Start ON
18 Engaged (OFF) ON Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
19 Engaged (OFF) OFF Engaged (OFF) Unlock (OFF) OFF Cannot Start ON
20 ON/OFF ON/OFF ON/OFF ON/OFF ON/OFF Cannot Start ON
KiSC issued 07, 2011 A

Kubota B1620 Specifications

General

Engine Type	Diesel
Cylinders	3
Fuel Type	Diesel
Hydraulic System Type	Open center
Drive	4WD
3-Point Hitch Category	Category I