ELECTRICAL SYSTEM
B2301, B2601, WSM
8-M13
5. INSTRUMENT PANEL
[1] EASY CHECKER™
If the warning lamps of the Easy Checker™ come on
during operation, immediately stop the engine, and find
the cause as shown below.
Never operate the machine while Easy Checker™
lamp is on.
Electrical Charge Warning Indicator
If the dynamo is not charging the battery, the warning
lamp in the Easy Checker™ will come on.
If this should happen during operation, check the
electrical charging system.
Glow Plug Indicator
When the key switch is in the "PREHEAT" position,
the glow plug indicator illuminates.
Engine Oil Pressure Warning Indicator
If the oil pressure in the engine goes below 49 kPa
(0.5 kgf/cm
2
, 7 psi), the warning lamp in the Easy
Checker™ will come on.
9Y1211156ELM0020US0
[2] SWITCHES AND SENSORS
Oil Pressure Switch
While oil pressure is high and the force applied to the
diaphragm (2) is larger than the spring tension, the
terminal contact (1) is open separated from the body
contact (3). If the pressure drops below approx. 49 kPa
(0.5 kgf/cm
2
, 7.1 psi), the contact closes.
9Y1211156ELM0021US0
Fuel Sensor
The remaining fuel quantity is detected by the fuel
level sensor installed in the fuel tank and indicated on the
fuel gauge. For detection, a float and a resistor are used.
As the float (1) lowers, the resistance of the variable
resistor (2) varies. The relation between the amount of
fuel and the resistance is as follows.
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(1) Engine Oil Pressure Warning
Indicator
(2) Electrical Charge Warning
Indicator
(3) Glow Plug Indicator
(4) Coolant Temperature Gauge
(5) Fuel Gauge
(1) Terminal Contact
(2) Diaphragm
(3) Body Contact
F1/2E
1 to 5 Ω 32.5 Ω (Reference) 103 to 117 Ω
(1) Float (2) Variable Resistor