Hour Meter; Audio Alarm - Toro Groundsmaster
4000?D Service Manual

PRELIMINARY – For Toro Distributor and Toro Company use only.

Hour Meter

The hour meter is located on the control console next to
the operator seat.
1. Connect the positive (+) terminal of a 12 VDC source
to the positive (+) terminal of the hour meter.
2. Connect the negative (−) terminal of the voltage
source to the other terminal of the hour meter.
3. The hour meter should move a 1/10 of an hour in six
minutes.
4. Disconnect voltage source from the hour meter.

Audio Alarm

The audio alarm for low engine oil pressure or high en-
gine coolant temperature is attached to the control con-
sole next to the operator seat.
IMPORTANT: Make sure to observe polarity on the
alarm terminals when testing. Damage to the alarm
may result from an improper connection.
1. Isolate alarm from the circuit. Correctly connect
12VDC source to the terminals (Fig. 21).
2. Alarm should sound. Remove voltage source from
the alarm. Reconnect alarm to the circuit.
Groundsmaster 4000−D
1
1. Top view
2. Bottom view
Page 5 − 15
Figure 20
4
3
2
Figure 21
3. Positive (+) terminal
4. Negative (−) terminal
Electrical System