Fuel Stop Solenoid
The fuel stop solenoid used on the Groundsmaster
7200/7210
must be energized for the diesel engine to
run. The solenoid is mounted to the injection pump on
the engine (Fig. 35).
The fuel stop solenoid includes two coils for operation:
the pull coil and the hold coil. When the ignition switch
is turned to START, the fuel stop solenoid is initially ener-
gized and the pull coil retracts the solenoid plunger.
Once the plunger is retracted, the hold coil will keep it re-
tracted for continued engine operation. When the sole-
noid is de–energized, the plunger extends to shut off fuel
supply to the engine causing the engine to stop running.
The fuel stop solenoid is grounded through the solenoid
housing.
1
2
Figure 35
The Standard Control Module Run output LED will be il-
luminated when the fuel stop solenoid hold coil is ener-
gized.
1.
Fuel stop solenoid
2.
Harness connector
NOTE: Refer to Chapter 8 – Foldout Diagrams when
2
troubleshooting the fuel stop solenoid.
1
In Place Testing
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
from the measured value of the component you are test-
ing.
3
Figure 36
1.
2.
Fuel stop solenoid
Pull coil terminal
3.
Hold coil terminal
1.
Make sure ignition switch is in the OFF position. Dis-
connect wire harness connector from fuel stop solenoid.
2.
Using a digital multimeter, touch one test lead to the
pull coil terminal and the other test lead to the fuel stop
solenoid frame (ground) (Fig. 36). The resistance of the
pull coil should be less than 1 ohm (but not zero).
3.
Using a digital multimeter, touch one test lead to the
hold coil terminal and the other test lead to the fuel stop
solenoid frame (ground) (Fig. 36). The resistance of the
hold coil should be approximately 15 ohms.
4.
If resistance of either coil is incorrect, replace fuel
stop solenoid.
5.
Connect wire harness connector to fuel stop sole-
noid.
Electrical System
Page 5 – 26
Groundsmaster 7200/7210
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My mower is a TORO 7210.
Start fuse defection. Why ?