Toro Groundsmaster 300 Series Service Manual page 160

Starting Problems (continued)
Condition
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Engine cranks, but does not start
(if engine cranks, cause of
problem is not in interlock
system).
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Engine cranks (but should not)
with traction pedal out of neutral.
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Engine cranks (but should not)
with PTO ON.
Troubleshooting
(Groundsmaster 322-D/325-D)
Possible Cause
Glow plugs not used properly
before starting.
Glow plug circuit malfunctioning.
Fuel shut-off solenoid is IN (should
be OUT).
Engine or fuel system problem.
Traction neutral switch out of
adjustment or faulty.
PTO switch out of adjustment
or faulty.
Page 6 - 14
Correction
Use glow plugs to pre-heat
engine cylinders before and
during cold starting. Hold glow
plug switch in ON position until
indicator glows red, or as
specified in Operator's Manual
for ambient temperature. DO
NOT exceed 2 minutes of
continuous use.
Test glow switch, glow plug
indicator and glow plugs and
replace if faulty.
Check glow plug circuit wiring
and repair if loose, corroded or
damaged.
Check for voltage at solenoid
connector while cranking. If no
voltage, but solenoid is IN,
solenoid is faulty. If there is
voltage, control unit is faulty.
See Troubleshooting section of
Chapter 4 - Mitsubishi Diesel
Engine.
Test switch and replace if faulty.
Make sure wires are connected
to "COMMON" and "NORMALLY
OPEN" (N.O.) terminals.
Test PTO switch and adjust or
replace if faulty.
®
Groundsmaster 300 Series