
The headlights turn on and off by operating
the light switch.
1
nvwh4b-002
Headlights_002
1
Light switch
1
4
2
3
nvwh4b-003
Headlights_003
1
Light switch
2
Headlights
3
Relay (CA1aF-12V-N-5)
4
Fuse (positive power source)
Key Switch
Use the key switch to start or stop the engine.
The conductive status of each key position is
described below.
STOP
START
GLOW
ON
OFF
qwkklf-007
B
OFF
ON
GLOW
START
30
19
50
30
50
19
B
Key Switch_001
2.
Key Position and Device Operation
ON (Run)
The diesel engine on the machine runs or
stops based on the fuel supply.
When the key is set to the "OFF" position,
the engine stop solenoid is turned off, and
fuel is shut off.
After the engine starts, while the key remains
in the "ON" position, the solenoid works and
fuel is supplied. (This type of solenoid is
always conductive. During operation =
conductive.)
Key [OFF]
Plunger position A
Key [ON]
Plunger position B
OFF
ON
GLOW
START
1
A
B
2
51ealk-003
ON (Run)_001
1
Plunger
2
Fuel solenoid
■
LM331
Electrical system
Page 5-16
Electrical components
Summary of Contents for LM331
Page 1: ...3 Unit Surround Trim Mower Service Manual Serial No LM331 10001 Ver 1 0...
Page 4: ...LM331 Contents...
Page 10: ...LM331 Safety Page 1 6 Safety Signs and Instruction Signs...
Page 26: ...LM331 Maintenance standards and maintenance Page 3 14 Mower Unit Layout...
Page 74: ...LM331 Hydraulic system Page 4 48 Adjustment...
Page 108: ...LM331 Electrical system Page 5 34 Adjustment...
Page 136: ...LM331 Main body Page 6 28 Inspection and repair of each section...
Page 159: ...Reference LM331 Reference Page 8 15 Electrical Circuit...