109823_2/09 5-1
SECTION 5: ELECTRICAL SYSTEMS
WARNING: Before working on any component of the electrical system, the negative (-)
battery cable should be disconnected from the battery, as electrical shock or damage to
system components may occur. Some testing requires 12 - volt power; care should be taken
in cases where power is needed.
Fuel Shutoff Solenoid
Description and Location
The fuel shutoff solenoid, , is located on the right side of
the engine, and is threaded into the rear of the fuel injection
pump, . The fuel shutoff solenoid contains a spring-
loaded plunger that pushes the injection pump control rack
to the closed (shut-off) position when the solenoid is not
energized. When the key switch is turned to the “ON” or
“START” position, the safety stop relay closes completing
the circuit that energizes the solenoid. This retracts the
plunger from the injection pump, and the injection pump
control rack moves into the position that allows the engine
to start.
Removal
1. Disconnect the negative (–) battery cable from the
battery.
2. Disconnect the wiring harness lead, from the fuel
shutoff solenoid.
3. Using a pair of pliers, carefully remove the fuel
shutoff solenoid,
( page 5-1, Fig. 5-1), from the
engine.
4. Remove and discard the sealing washer,
( page
5-1, Fig. 5-2), which seals the solenoid,
( page
5-1, Fig. 5-2), to the fuel injection pump.
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