Baroness LM331, Service Manual, Page: 154 / 165

Electrical Circuit
22(R/W)
Stop
Rotation
46(W/G) 47(W/L)
K1
Mower stop
K2
Mower rotation
K3
Neutral detection
VCC V
out
VCC V
out
GND
58(R/G)
Proximity Switch
K4
Mower lowering detection
Mower rotation/stop
switch
Normal rotation
Reverse rotation
60(G/Y)
55(G/L)
K5
Mower rotation changeover
K6
Fuel SOL retaining
Lapping SW
K1-1
Mower stop
K3-1
Neutral detection
P
brake SW
57(G/Y)
40(G/W)
1
1
(R/G)
K2-1
Mower rotation
K4-1
Mower lowering detection
31(L/R)
32 L/Y
K5-1
Mower rotation changeover
Stack valve
33(L/B) 34(L/G)
Reverse rotation Sol.
Normal rotation Sol.
22(R/W)
Seat switch
Diode unit
38(Y/G)
40 G/W
40
G
G/W
K8
Fuel SOL
suction
13(R/B)
T
imer unit
(solenoid)
HC01
19
50(R/B) 51(Y)
E B
R R/W Y B
L
IG
29(Y)
Fuel SOL
K6-1
Fuel SOL
retaining
30A
48(R/L)
K8-1
Fuel SOL
suction
4(W)
2(R)
R
3(R)
3(R)
E B
W R
B
Battery
-
Battery
+
R
B
50A
1(R)
22(R/W)
27(G/R) 29(Y) 30(P)
Suction Retaining
E
11
R
/G
13 R/B 20 Y/R 21 SB
IGN(+) UNIT
E
M2 Fuel gauge 52BG2
Wa
te
r
temperature buzzer
EBM-12
T
ank unit
+
UNIT
E
M3 W
a
ter
temperature gauge
61(R/L)
GND
Proximity Switch
22(R/W)
1G386-60241
Diode unit
G
G/W
K7
Starter relay
K1-2
Mower stop
K3-2
Neutral detection
P
brake SW
Glow Hydraulic Charge
Pilot box
HEAD LIGHT
T
imer
(Glow lamp)
Mini fuse box 10P-A
[39] W [50] Y [41] G [13] R
W
R
Starter switch
HEAD LIGHT
O [18]
RB [51] RG [15]
R
W
[2]
Lg [38]
38(Y/G)
52 Y/L
53 Y/B
54(Y/BR)
44(BR)
Starter motor
Alternator
K7-1
Starter relay
9(W)
59(W/B)
M8
M10
M6
13
4
2
Delay timer
0.9s
34
1
2
1s
Oil pressure switch
h
E B
Hour meter
43(W/R) 21(S/B)
13(RB)
E B
30(P)
R/B
R/G
R
W
B
13(R/B) 35(R/G)
M5 M5 M4
13(R/B) E B 36(Y/B)
E B 13(R/B) 37(Y) 42(R/B)
7(G)
M4
Glow
20(Y/R) 43(W/R) 13(R/B) 42(R/B) 13(R/B) 44(BR)
48(G/W)
Y/B
B
K9
Headlight relay
Light switch
K9-1
OFF ON
1(R
W
)
3(L)
R
4(R)
1(R
W
)
R B B
T
o
mini fuse box
E
LED LIGHT
NS-2556
R W R B R BR
10A
9(W)
12(RW)
10(G)
12(RW)
5A
15A
1(R)
5(R
W
)
7(G) 9(W)
B
AC
19
50
B
AC
19
50
OFF ON Glow
Start
G/B
W/L
E B
62(Y/R)
E B E B
E B
E B
E B
E B
E B
E B
E B
E B
E B
3(R)
27(G/R) 27(G/R)
55(G/L)
S1
SNS1
S2
S4
T1
T2
S3
D1
S5
M1
T3
BZ1
D2
S4
W
a
ter temperature switch
W
a
ter temperature sensor
SNS2
vgmkvc-041E
Electrical Circuit_001
LM331
Reference
Page 8-10
Electrical Circuit