Toro Z MASTER 4000 Series Service Manual page 105

Electric PTO Clutch Installation (continued)
Coil Resistance Measurement Test
PTO Clutch Electrical Specification Chart
Resistance (OHMs)
2.29 ± 5%
1.84 ± 5%
PTO Clutch Continuity to Ground Check Test
4000 Series Z MASTER® Service Manual
3442-427 Rev A
5. Lower the unit and verify proper function.
If the PTO clutch is not engaging or is suspect as a cause of electrical problems,
use the following electrical troubleshooting steps. These procedures will help
determine if the clutch has failed as a result of or is the cause of an electrical
problem.
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop and remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multi-meter to measure resistance (OHMs setting).
4. Connect the meter lead wires to the terminals in the clutch connector.
5. See the PTO Clutch Electrical Specifications chart.
AMP Draw
5.24
6.53
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop and remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multi-meter to measure resistance (OHM setting).
4. Connect one multi-meter lead to the engine, chassis or battery ground.
Connect the other multi-meter lead to each of the clutch connector terminals.
5. The clutch connector terminals should never have continuity to ground and
should be OPEN at all times.
6. If continuity is found between the PTO connector and ground, the PTO clutch
and the PTO switch must be replaced.
g336410
Continuity to Ground
OPEN
OPEN
Figure 88
Page 8–11
Clutch
116–1947
116–1620
Electrical: Service and Repairs