Hour Meter; Temperature Gauge - Toro GroundsmasterR 4300-D Service Manual

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 of a 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).

Temperature Gauge

The temperature gauge on the control panel indicates
engine coolant temperature level during machine op-
eration. The changing resistance of the engine tempera-
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
(100 C).
When engine coolant temperature rises to approximate-
o o
ly 221 F (105 C), the temperature 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.
Electrical System
o
F
1. Control panel
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Hobbs
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Figure 21
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Figure 22
2. Temperature gauge
Groundsmaster 4300--D
1