Groundsmaster 4300--DPage 5 -- 24Electrical System
Hour Meter
The hour meter is located on the outside of the control
arm.
1. Remove control arm covers to gain access to hour
meter and meter terminals (see Control Arm Disassem-
bly in the Service and Repairs section of Chapter 6 --
Chassis).
2. Make sure ignition switch is in the OFF position. Lo-
cate the hour meter and disconnect the wire harness
electrical connector from the meter.
3. Connect the positive (+) terminal ofa 12 VDC source
to the positive (+) terminal of the hour meter.
4. Connect the negative (--) terminal of the voltage
source to the other terminal of the hour meter.
5. The hour meter should move 1/10 of an hour every
six (6) minutes.
6. Disconnect the voltage source from the hour meter.
7. Replace the hour meter if necessary.
8. Connect wire harness electrical connector to the
hour meter.
9. Install control arm covers to machine (see Control
Arm Assembly in the Service and Repairs section of
Chapter 6 -- Chassis).
Figure 21
QUARTZ
Hobbs
HOURS
1
0000
1
10
+
BACK
Temperature Gauge
The temperature gauge on the control panel indicates
engine coolant temperature level during machine op-
eration.Thec hanging resistance oftheenginetempera-
ture sender signals the temperature gauge.
The temperature gauge should display the first green
segment when the ignition switch is turned to RUN. The
first yellow segment on the gauge should display when
engine coolant temperature is approximately 212
o
F
(100
o
C).
When enginecoolanttemperaturerises toapproximate-
ly 221
o
F (105
o
C),thetemperature gauge should display
the first red segment. At this point, the temperature
gauge provides an input to the TEC controller. This con-
troller input causes the high temperature warning light
on the control panel to illuminate and the cutting decks
to shut down.
1. Control panel 2. Temperature gauge
Figure 22
1
2
