Warning Lights - Toro Groundsmaster 4100-D Service Manual

Warning Lights

Testing Warning Lights
1. Apply 12 VDC to terminals 1A and 2A.
2. Ground terminals 1B and 2B.
3. Both indicator lights should light.
Engine Oil Pressure Light
The oil pressure light should come on when the ignition
switch is in the ON position with the engine not running.
Also, it should light with the engine running if the engine
oil pressure drops below 7 PSI (0.5 kg/cm
1. Disconnect green wire from the oil pressure switch
on the engine (located near the starter motor).
2. Ground green wire to the engine block.
3. Turn ignition switch to ON; the oil pressure light
should come on indicating correct operation of the elec-
trical wiring to the oil pressure switch.
4. Turn ignition switch to OFF. Reconnect green wire to
the oil pressure switch. Apply skin−over grease (Toro
Part No. 505−165) to switch terminal.
High Temperature Shutdown Light
If the coolant temperature rises to approximately 230
o
(110 C), the high temperature light should come on as
the high temperature shutdown switch stops the engine.
1. Disconnect and ground the blue wire attached to
temperature switch on flywheel end of engine. The
warning light should illuminate and the engine should
stop running.
2. Depress high temperature override switch and hold.
Engine should start and run.
3. Reconnect blue wire to temperature switch.
Glow Plug Indicator Light
The glow plug indicator light should come on when the
ignition switch is placed in ON prior to placing the ignition
switch in START. The light should stay lit for approxi-
mately 7 seconds while the ignition switch is left in ON.
Charge Indicator Light
The charge indicator light should come on when the igni-
tion switch is in ON with the engine not running, or with
an improperly operating charging circuit while the en-
gine is running.
Electrical System
2 ).
1. Charge indicator
2. Engine oil pressure
o
F
2
1
1. Charge indicator
2. Engine oil pressure
3. High temp shutdown
Rev. E
Page 5 − 12
3
2
1
Figure 13
3. High temp shutdown
4. Glow plug indicator
5
6
1B
2B
Figure 14
4. Glow plug indicator
5. Warning light front
6. Warning light back
Groundsmaster 4100−D
4
3
4
1A (+)
2A (+)