Fusible Links - Toro Groundsmaster 3500 30807 Service Manual

Fusible Links

The Groundsmaster 3500 uses a number of fusible links
for circuit protection. A number of fusible links are lo-
cated in a harness that connects the starter B+ terminal
to the main wire harness. Power from the alternator,
power to the ignition switch, and in the case of diesel
powered units, power to the glow relay is protected by
the fusible link harness.
Diesel powered units have an additional fusible link in-
tegrated into the main wire harness between the starter
G terminal and the stop solenoid pull coil.
If any of these links should fail, current flow in the pro-
tected circuit will be interrupted. Refer to wire harness
drawings in Chapter 9 − Foldout Drawings in this manual
for additional information.
Testing
1. Make sure that ignition switch is OFF.
2. Disconnect negative (−) battery cable from battery
terminal and then disconnect positive (+) cable from bat-
tery (see Battery Service in the Service and Repairs sec-
tion of this chapter).
3. For fusible link harness (Fig. 28):
A. Locate and unplug fusible link connector from
machine wire harness.
B. Use a multimeter to make sure that continuity ex-
ists between the fusible link terminal on the starter
B+ terminal (terminal J1 on fusible link harness) and
each of the terminals in the link harness connector
P1. If any of the fusible links are open, replace the
fusible link harness.
4. For fusible link integrated into wire harness:
A. Locate and unplug machine wire harness con-
nector from the fuel stop solenoid (Fig. 29).
B. Use a multimeter to make sure that continuity ex-
ists between the wire harness connector at the start-
er and the engine fuel stop solenoid connector for the
solenoid pull coil (Fig. 30 − yellow wire).
C. If this fusible link should fail, make sure that the
wire harness is repaired with the correct fusible link.
Do not replace a failed harness fusible link with a reg-
ular section of wire.
Groundsmaster 3500
1. Fuel stop solenoid
1
1. Fuel stop solenoid
5. When testing is completed, make sure to connect all
disconnected wire harness components. Connect posi-
tive (+) battery cable and then negative (−) cable (see
Battery Service in the Service and Repairs section of
this chapter).
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FUSIBLE LINK
FUSIBLE LINK
FUSIBLE LINK
Figure 28
1
2
Figure 29
2. Harness connector
Figure 30
2. Pull coil terminal
Electrical System
2