caution - Toro
caution - Toro
caution - Toro
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Warning Lights<br />
Engine Oil Pressure Light<br />
The oil pressure light should come on when the ignition<br />
switch is in the ON position with the engine not running.<br />
Also, it should light with the engine running if the engine<br />
oil pressure drops below 7 PSI (0.5 kg/cm 2 ).<br />
3<br />
1. Disconnect green wire from the oil pressure switch<br />
on the engine (located near the starter motor).<br />
2<br />
4<br />
2. Ground green wire to the engine block.<br />
3. Turn ignition switch to ON; the oil pressure light<br />
should come on indicating correct operation of the electrical<br />
wiring to the oil pressure switch.<br />
1<br />
4. Turn ignition switch to OFF. Reconnect green wire to<br />
the oil pressure switch. Apply skin--over grease (<strong>Toro</strong><br />
Part No. 505--165) to switch terminal.<br />
High Temperature Warning Light<br />
If the coolant temperature rises to approximately 220 o F<br />
(105 o C), the high temperature warning light should illuminate<br />
as the dual temperature switch terminal closes.<br />
NOTE: If the PTO is engaged when the dual temperature<br />
switch terminal closes, the PTO will disengage.<br />
To test the high temperature warning light and its circuit<br />
wiring, ground the blue wire attached to dual temperature<br />
switch on engine water flange. The high temperature<br />
warning light should illuminate.<br />
Glow Plug Indicator Light<br />
1. Charge indicator<br />
2. Engine oil pressure<br />
2<br />
Figure 15<br />
3. High temp warning<br />
4. Glow plug indicator<br />
3<br />
Electrical<br />
System<br />
The glow plug indicator light should come on when the<br />
ignition switch is placed in ON prior to placing the ignition<br />
switch in START. The light should stay lit for approximately<br />
10 seconds while the ignition switch is left in ON.<br />
1<br />
5<br />
4<br />
Charge Indicator Light<br />
1B<br />
1A (+)<br />
The charge indicator light should come on when the ignition<br />
switch is in ON with the engine not running or with<br />
an improperly operating charging circuit while the engine<br />
is running.<br />
2B 2A (+)<br />
Testing Warning Lights<br />
1. Apply 12 VDC to terminals 1A and 2A.<br />
2. Ground terminals 1B and 2B.<br />
3. Both indicator lights should light.<br />
1. Charge indicator<br />
2. Engine oil pressure<br />
3. High temp shutdown<br />
Figure 16<br />
4. Glow plug indicator<br />
5. Warning light back<br />
Groundsmaster 4100--D Page 5 - 13 Electrical System
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