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Greensmaster 3320/3420 Page 6 - 69 Electrical System
Fuel Solenoid (Greensmaster 3420)
The fuel solenoid used on Greensmaster 3420 ma-
chines must be energized for the diesel engine to run.
The fuel solenoid is mounted to the injection pump on
the engine (Fig. 90). The Toro Electronic Controller
(TEC) energizes the fuel solenoid when the ignition
switch is in either the RUN or START position.
Thefuel solenoidincludes two(2) coilsforoperation:the
pull coil and the hold coil. When the ignition s witch is
turned to START, the fuel solenoid pull coil is energized
and the solenoid plunger retracts. Once the plunger is
retracted,the hold coil willkeep itretractedforcontinued
engine operation. When the solenoid is de- energized,
the plunger extends to shut off fuel supply to the engine
causing the engine to stop running.
NOTE: A fusible link in the machine wire harness pro-
tects the fuel solenoid pull coil circuit. If this link should
fail, the fuel solenoid will not function and the engine will
not run. Refer to electrical drawings in Chapter 10 -
Foldout Drawings when troubleshooting the fuel sole-
noid.
NOTE: See Kubota Workshop Manual, Diesel Engine,
SM- E3B Series for information regarding fuel solenoid
testing procedure.
Figure 90
1. Engine assembly 2. Fuel solenoid
1
2
Electrical
System